Home / 131,126,470.13-180,949,775.90-72,387,871.04

Finding the Fourth Proportional to 131,126,470.13, 180,949,775.90 and 72,387,871.04

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Solution

The fourth proportional to 131,126,470.13, 180,949,775.90 and 72,387,871.04 is: 99,892,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,126,470.13 : 180,949,775.90 = 72,387,871.04 : x
  2. Step 2: Convert to fraction form
    131,126,470.13/180,949,775.90 = 72,387,871.04/x
  3. Step 3: Cross multiply
    131,126,470.13x = 180,949,775.90 × 72,387,871.04
  4. Step 4: Simplify right side
    131,126,470.13x = 13,098,569,041,299,412
  5. Step 5: Solve for x
    x = 13,098,569,041,299,412/131,126,470.13
  6. Step 6: Final answer
    x = 99,892,638.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.