Home / 86,148,001.20-129,222,001.80-70,842,500.40

Finding the Fourth Proportional to 86,148,001.20, 129,222,001.80 and 70,842,500.40

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Solution

The fourth proportional to 86,148,001.20, 129,222,001.80 and 70,842,500.40 is: 106,263,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,148,001.20 : 129,222,001.80 = 70,842,500.40 : x
  2. Step 2: Convert to fraction form
    86,148,001.20/129,222,001.80 = 70,842,500.40/x
  3. Step 3: Cross multiply
    86,148,001.20x = 129,222,001.80 × 70,842,500.40
  4. Step 4: Simplify right side
    86,148,001.20x = 9,154,409,714,205,302
  5. Step 5: Solve for x
    x = 9,154,409,714,205,302/86,148,001.20
  6. Step 6: Final answer
    x = 106,263,750.60

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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.