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Finding the Fourth Proportional to 138,249.88, 207,374.71 and 79,044.04

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Solution

The fourth proportional to 138,249.88, 207,374.71 and 79,044.04 is: 118,566.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,249.88 : 207,374.71 = 79,044.04 : x
  2. Step 2: Convert to fraction form
    138,249.88/207,374.71 = 79,044.04/x
  3. Step 3: Cross multiply
    138,249.88x = 207,374.71 × 79,044.04
  4. Step 4: Simplify right side
    138,249.88x = 16,391,734,872.23
  5. Step 5: Solve for x
    x = 16,391,734,872.23/138,249.88
  6. Step 6: Final answer
    x = 118,566.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.