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Finding the Fourth Proportional to 125,085.70, 187,571.88 and 53,974.78

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Solution

The fourth proportional to 125,085.70, 187,571.88 and 53,974.78 is: 80,937.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,085.70 : 187,571.88 = 53,974.78 : x
  2. Step 2: Convert to fraction form
    125,085.70/187,571.88 = 53,974.78/x
  3. Step 3: Cross multiply
    125,085.70x = 187,571.88 × 53,974.78
  4. Step 4: Simplify right side
    125,085.70x = 10,124,150,957.19
  5. Step 5: Solve for x
    x = 10,124,150,957.19/125,085.70
  6. Step 6: Final answer
    x = 80,937.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.