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Finding the Fourth Proportional to 177,604.78, 266,407.17 and 72,431.98

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Solution

The fourth proportional to 177,604.78, 266,407.17 and 72,431.98 is: 108,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,604.78 : 266,407.17 = 72,431.98 : x
  2. Step 2: Convert to fraction form
    177,604.78/266,407.17 = 72,431.98/x
  3. Step 3: Cross multiply
    177,604.78x = 266,407.17 × 72,431.98
  4. Step 4: Simplify right side
    177,604.78x = 19,296,398,809.30
  5. Step 5: Solve for x
    x = 19,296,398,809.30/177,604.78
  6. Step 6: Final answer
    x = 108,647.97

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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.