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Finding the Fourth Proportional to 178,431.78, 267,562.92 and 103,574.89

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Solution

The fourth proportional to 178,431.78, 267,562.92 and 103,574.89 is: 155,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,431.78 : 267,562.92 = 103,574.89 : x
  2. Step 2: Convert to fraction form
    178,431.78/267,562.92 = 103,574.89/x
  3. Step 3: Cross multiply
    178,431.78x = 267,562.92 × 103,574.89
  4. Step 4: Simplify right side
    178,431.78x = 27,712,798,669.26
  5. Step 5: Solve for x
    x = 27,712,798,669.26/178,431.78
  6. Step 6: Final answer
    x = 155,313.13

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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.