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Finding the Fourth Proportional to 123,732.10, 170,750.74 and 67,143.46

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Solution

The fourth proportional to 123,732.10, 170,750.74 and 67,143.46 is: 92,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,732.10 : 170,750.74 = 67,143.46 : x
  2. Step 2: Convert to fraction form
    123,732.10/170,750.74 = 67,143.46/x
  3. Step 3: Cross multiply
    123,732.10x = 170,750.74 × 67,143.46
  4. Step 4: Simplify right side
    123,732.10x = 11,464,795,481.16
  5. Step 5: Solve for x
    x = 11,464,795,481.16/123,732.10
  6. Step 6: Final answer
    x = 92,658.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.