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Finding the Fourth Proportional to 169,687.40, 254,531.10 and 99,645.80

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Solution

The fourth proportional to 169,687.40, 254,531.10 and 99,645.80 is: 149,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,687.40 : 254,531.10 = 99,645.80 : x
  2. Step 2: Convert to fraction form
    169,687.40/254,531.10 = 99,645.80/x
  3. Step 3: Cross multiply
    169,687.40x = 254,531.10 × 99,645.80
  4. Step 4: Simplify right side
    169,687.40x = 25,362,955,084.38
  5. Step 5: Solve for x
    x = 25,362,955,084.38/169,687.40
  6. Step 6: Final answer
    x = 149,468.70

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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.