Home / 100,072,635.73-138,029,044.75-91,839,285.43

Finding the Fourth Proportional to 100,072,635.73, 138,029,044.75 and 91,839,285.43

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Solution

The fourth proportional to 100,072,635.73, 138,029,044.75 and 91,839,285.43 is: 126,672,878.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,072,635.73 : 138,029,044.75 = 91,839,285.43 : x
  2. Step 2: Convert to fraction form
    100,072,635.73/138,029,044.75 = 91,839,285.43/x
  3. Step 3: Cross multiply
    100,072,635.73x = 138,029,044.75 × 91,839,285.43
  4. Step 4: Simplify right side
    100,072,635.73x = 12,676,488,838,425,494
  5. Step 5: Solve for x
    x = 12,676,488,838,425,494/100,072,635.73
  6. Step 6: Final answer
    x = 126,672,878.61

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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.