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Finding the Fourth Proportional to 125,654.88, 173,411.94 and 77,939.94

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Solution

The fourth proportional to 125,654.88, 173,411.94 and 77,939.94 is: 107,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,654.88 : 173,411.94 = 77,939.94 : x
  2. Step 2: Convert to fraction form
    125,654.88/173,411.94 = 77,939.94/x
  3. Step 3: Cross multiply
    125,654.88x = 173,411.94 × 77,939.94
  4. Step 4: Simplify right side
    125,654.88x = 13,515,716,198.88
  5. Step 5: Solve for x
    x = 13,515,716,198.88/125,654.88
  6. Step 6: Final answer
    x = 107,562.21

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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.