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Finding the Fourth Proportional to 125,253.41, 172,868.17 and 79,317.24

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Solution

The fourth proportional to 125,253.41, 172,868.17 and 79,317.24 is: 109,469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,253.41 : 172,868.17 = 79,317.24 : x
  2. Step 2: Convert to fraction form
    125,253.41/172,868.17 = 79,317.24/x
  3. Step 3: Cross multiply
    125,253.41x = 172,868.17 × 79,317.24
  4. Step 4: Simplify right side
    125,253.41x = 13,711,425,731.66
  5. Step 5: Solve for x
    x = 13,711,425,731.66/125,253.41
  6. Step 6: Final answer
    x = 109,469.48

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1.5x scale

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.