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Finding the Fourth Proportional to 125,599.68, 187,640.28 and 80,861.76

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Solution

The fourth proportional to 125,599.68, 187,640.28 and 80,861.76 is: 120,803.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,599.68 : 187,640.28 = 80,861.76 : x
  2. Step 2: Convert to fraction form
    125,599.68/187,640.28 = 80,861.76/x
  3. Step 3: Cross multiply
    125,599.68x = 187,640.28 × 80,861.76
  4. Step 4: Simplify right side
    125,599.68x = 15,172,923,287.69
  5. Step 5: Solve for x
    x = 15,172,923,287.69/125,599.68
  6. Step 6: Final answer
    x = 120,803.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.