Home / 138,287,282.20-190,836,057.66-76,407,179.92

Finding the Fourth Proportional to 138,287,282.20, 190,836,057.66 and 76,407,179.92

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Solution

The fourth proportional to 138,287,282.20, 190,836,057.66 and 76,407,179.92 is: 105,441,691.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287,282.20 : 190,836,057.66 = 76,407,179.92 : x
  2. Step 2: Convert to fraction form
    138,287,282.20/190,836,057.66 = 76,407,179.92/x
  3. Step 3: Cross multiply
    138,287,282.20x = 190,836,057.66 × 76,407,179.92
  4. Step 4: Simplify right side
    138,287,282.20x = 14,581,244,992,851,114
  5. Step 5: Solve for x
    x = 14,581,244,992,851,114/138,287,282.20
  6. Step 6: Final answer
    x = 105,441,691.82

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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.