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Finding the Fourth Proportional to 178,486.79, 267,644.05 and 103,625.78

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Solution

The fourth proportional to 178,486.79, 267,644.05 and 103,625.78 is: 155,388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,486.79 : 267,644.05 = 103,625.78 : x
  2. Step 2: Convert to fraction form
    178,486.79/267,644.05 = 103,625.78/x
  3. Step 3: Cross multiply
    178,486.79x = 267,644.05 × 103,625.78
  4. Step 4: Simplify right side
    178,486.79x = 27,734,823,443.61
  5. Step 5: Solve for x
    x = 27,734,823,443.61/178,486.79
  6. Step 6: Final answer
    x = 155,388.66

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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.