Home / 83,141,009,999.80-124,711,514,999.70-81,488,015,913.40

Finding the Fourth Proportional to 83,141,009,999.80, 124,711,514,999.70 and 81,488,015,913.40

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Solution

The fourth proportional to 83,141,009,999.80, 124,711,514,999.70 and 81,488,015,913.40 is: 122,232,023,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,141,009,999.80 : 124,711,514,999.70 = 81,488,015,913.40 : x
  2. Step 2: Convert to fraction form
    83,141,009,999.80/124,711,514,999.70 = 81,488,015,913.40/x
  3. Step 3: Cross multiply
    83,141,009,999.80x = 124,711,514,999.70 × 81,488,015,913.40
  4. Step 4: Simplify right side
    83,141,009,999.80x = 10,162,493,918,879,774,932,992
  5. Step 5: Solve for x
    x = 10,162,493,918,879,774,932,992/83,141,009,999.80
  6. Step 6: Final answer
    x = 122,232,023,870.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.