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Finding the Fourth Proportional to 177,540.90, 266,084.55 and 72,240.90

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Solution

The fourth proportional to 177,540.90, 266,084.55 and 72,240.90 is: 108,269.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,540.90 : 266,084.55 = 72,240.90 : x
  2. Step 2: Convert to fraction form
    177,540.90/266,084.55 = 72,240.90/x
  3. Step 3: Cross multiply
    177,540.90x = 266,084.55 × 72,240.90
  4. Step 4: Simplify right side
    177,540.90x = 19,222,187,368.10
  5. Step 5: Solve for x
    x = 19,222,187,368.10/177,540.90
  6. Step 6: Final answer
    x = 108,269.07

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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.