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Finding the Fourth Proportional to 177,474.72, 266,331.60 and 72,312.60

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Solution

The fourth proportional to 177,474.72, 266,331.60 and 72,312.60 is: 108,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,474.72 : 266,331.60 = 72,312.60 : x
  2. Step 2: Convert to fraction form
    177,474.72/266,331.60 = 72,312.60/x
  3. Step 3: Cross multiply
    177,474.72x = 266,331.60 × 72,312.60
  4. Step 4: Simplify right side
    177,474.72x = 19,259,130,458.16
  5. Step 5: Solve for x
    x = 19,259,130,458.16/177,474.72
  6. Step 6: Final answer
    x = 108,517.60

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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.