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Finding the Fourth Proportional to 187,883.90, 281,821.68 and 45,729.78

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Solution

The fourth proportional to 187,883.90, 281,821.68 and 45,729.78 is: 68,593.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,883.90 : 281,821.68 = 45,729.78 : x
  2. Step 2: Convert to fraction form
    187,883.90/281,821.68 = 45,729.78/x
  3. Step 3: Cross multiply
    187,883.90x = 281,821.68 × 45,729.78
  4. Step 4: Simplify right side
    187,883.90x = 12,887,643,425.63
  5. Step 5: Solve for x
    x = 12,887,643,425.63/187,883.90
  6. Step 6: Final answer
    x = 68,593.66

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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.