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Finding the Fourth Proportional to 123,330.79, 170,197.02 and 66,742.17

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Solution

The fourth proportional to 123,330.79, 170,197.02 and 66,742.17 is: 92,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,330.79 : 170,197.02 = 66,742.17 : x
  2. Step 2: Convert to fraction form
    123,330.79/170,197.02 = 66,742.17/x
  3. Step 3: Cross multiply
    123,330.79x = 170,197.02 × 66,742.17
  4. Step 4: Simplify right side
    123,330.79x = 11,359,318,442.33
  5. Step 5: Solve for x
    x = 11,359,318,442.33/123,330.79
  6. Step 6: Final answer
    x = 92,104.48

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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.