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Finding the Fourth Proportional to 125,013.60, 172,517.31 and 67,651.59

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Solution

The fourth proportional to 125,013.60, 172,517.31 and 67,651.59 is: 93,358.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,013.60 : 172,517.31 = 67,651.59 : x
  2. Step 2: Convert to fraction form
    125,013.60/172,517.31 = 67,651.59/x
  3. Step 3: Cross multiply
    125,013.60x = 172,517.31 × 67,651.59
  4. Step 4: Simplify right side
    125,013.60x = 11,671,070,731.93
  5. Step 5: Solve for x
    x = 11,671,070,731.93/125,013.60
  6. Step 6: Final answer
    x = 93,358.41

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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.