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Finding the Fourth Proportional to 177,531.40, 266,448.30 and 72,425.80

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Solution

The fourth proportional to 177,531.40, 266,448.30 and 72,425.80 is: 108,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,531.40 : 266,448.30 = 72,425.80 : x
  2. Step 2: Convert to fraction form
    177,531.40/266,448.30 = 72,425.80/x
  3. Step 3: Cross multiply
    177,531.40x = 266,448.30 × 72,425.80
  4. Step 4: Simplify right side
    177,531.40x = 19,297,731,286.14
  5. Step 5: Solve for x
    x = 19,297,731,286.14/177,531.40
  6. Step 6: Final answer
    x = 108,700.38

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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.