Home / 125,104.50-172,644.82-71,388.95

Finding the Fourth Proportional to 125,104.50, 172,644.82 and 71,388.95

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Solution

The fourth proportional to 125,104.50, 172,644.82 and 71,388.95 is: 98,517.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,104.50 : 172,644.82 = 71,388.95 : x
  2. Step 2: Convert to fraction form
    125,104.50/172,644.82 = 71,388.95/x
  3. Step 3: Cross multiply
    125,104.50x = 172,644.82 × 71,388.95
  4. Step 4: Simplify right side
    125,104.50x = 12,324,931,381.04
  5. Step 5: Solve for x
    x = 12,324,931,381.04/125,104.50
  6. Step 6: Final answer
    x = 98,517.09

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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.