Home / 83,242,811.10-124,864,216.65-81,807,920.40

Finding the Fourth Proportional to 83,242,811.10, 124,864,216.65 and 81,807,920.40

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Solution

The fourth proportional to 83,242,811.10, 124,864,216.65 and 81,807,920.40 is: 122,711,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,242,811.10 : 124,864,216.65 = 81,807,920.40 : x
  2. Step 2: Convert to fraction form
    83,242,811.10/124,864,216.65 = 81,807,920.40/x
  3. Step 3: Cross multiply
    83,242,811.10x = 124,864,216.65 × 81,807,920.40
  4. Step 4: Simplify right side
    83,242,811.10x = 10,214,881,896,511,556
  5. Step 5: Solve for x
    x = 10,214,881,896,511,556/83,242,811.10
  6. Step 6: Final answer
    x = 122,711,880.60

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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.