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Finding the Fourth Proportional to 187,375.80, 281,063.70 and 124,390.20

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Solution

The fourth proportional to 187,375.80, 281,063.70 and 124,390.20 is: 186,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,375.80 : 281,063.70 = 124,390.20 : x
  2. Step 2: Convert to fraction form
    187,375.80/281,063.70 = 124,390.20/x
  3. Step 3: Cross multiply
    187,375.80x = 281,063.70 × 124,390.20
  4. Step 4: Simplify right side
    187,375.80x = 34,961,569,855.74
  5. Step 5: Solve for x
    x = 34,961,569,855.74/187,375.80
  6. Step 6: Final answer
    x = 186,585.30

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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.