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Finding the Fourth Proportional to 123,864.76, 170,932.62 and 67,275.64

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Solution

The fourth proportional to 123,864.76, 170,932.62 and 67,275.64 is: 92,839.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,864.76 : 170,932.62 = 67,275.64 : x
  2. Step 2: Convert to fraction form
    123,864.76/170,932.62 = 67,275.64/x
  3. Step 3: Cross multiply
    123,864.76x = 170,932.62 × 67,275.64
  4. Step 4: Simplify right side
    123,864.76x = 11,499,601,407.38
  5. Step 5: Solve for x
    x = 11,499,601,407.38/123,864.76
  6. Step 6: Final answer
    x = 92,839.98

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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.