Home / 138,979,553.91-191,795,314.13-76,255,635.30

Finding the Fourth Proportional to 138,979,553.91, 191,795,314.13 and 76,255,635.30

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Solution

The fourth proportional to 138,979,553.91, 191,795,314.13 and 76,255,635.30 is: 105,234,713.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,979,553.91 : 191,795,314.13 = 76,255,635.30 : x
  2. Step 2: Convert to fraction form
    138,979,553.91/191,795,314.13 = 76,255,635.30/x
  3. Step 3: Cross multiply
    138,979,553.91x = 191,795,314.13 × 76,255,635.30
  4. Step 4: Simplify right side
    138,979,553.91x = 14,625,473,526,160,222
  5. Step 5: Solve for x
    x = 14,625,473,526,160,222/138,979,553.91
  6. Step 6: Final answer
    x = 105,234,713.41

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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.