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Finding the Fourth Proportional to 178,455.40, 267,456.30 and 73,155.40

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Solution

The fourth proportional to 178,455.40, 267,456.30 and 73,155.40 is: 109,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,455.40 : 267,456.30 = 73,155.40 : x
  2. Step 2: Convert to fraction form
    178,455.40/267,456.30 = 73,155.40/x
  3. Step 3: Cross multiply
    178,455.40x = 267,456.30 × 73,155.40
  4. Step 4: Simplify right side
    178,455.40x = 19,565,872,609.02
  5. Step 5: Solve for x
    x = 19,565,872,609.02/178,455.40
  6. Step 6: Final answer
    x = 109,640.13

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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.