Home / 137,561,489.28-189,836,266.56-78,822,882.88

Finding the Fourth Proportional to 137,561,489.28, 189,836,266.56 and 78,822,882.88

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Solution

The fourth proportional to 137,561,489.28, 189,836,266.56 and 78,822,882.88 is: 108,776,387.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,561,489.28 : 189,836,266.56 = 78,822,882.88 : x
  2. Step 2: Convert to fraction form
    137,561,489.28/189,836,266.56 = 78,822,882.88/x
  3. Step 3: Cross multiply
    137,561,489.28x = 189,836,266.56 × 78,822,882.88
  4. Step 4: Simplify right side
    137,561,489.28x = 14,963,441,805,435,340
  5. Step 5: Solve for x
    x = 14,963,441,805,435,340/137,561,489.28
  6. Step 6: Final answer
    x = 108,776,387.08

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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.