Home / 138,671,711.94-191,366,789.85-76,791,975.78

Finding the Fourth Proportional to 138,671,711.94, 191,366,789.85 and 76,791,975.78

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Solution

The fourth proportional to 138,671,711.94, 191,366,789.85 and 76,791,975.78 is: 105,972,830.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,671,711.94 : 191,366,789.85 = 76,791,975.78 : x
  2. Step 2: Convert to fraction form
    138,671,711.94/191,366,789.85 = 76,791,975.78/x
  3. Step 3: Cross multiply
    138,671,711.94x = 191,366,789.85 × 76,791,975.78
  4. Step 4: Simplify right side
    138,671,711.94x = 14,695,433,891,257,550
  5. Step 5: Solve for x
    x = 14,695,433,891,257,550/138,671,711.94
  6. Step 6: Final answer
    x = 105,972,830.98

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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.