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Finding the Fourth Proportional to 123,423.45, 170,324.05 and 66,834.82

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Solution

The fourth proportional to 123,423.45, 170,324.05 and 66,834.82 is: 92,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,423.45 : 170,324.05 = 66,834.82 : x
  2. Step 2: Convert to fraction form
    123,423.45/170,324.05 = 66,834.82/x
  3. Step 3: Cross multiply
    123,423.45x = 170,324.05 × 66,834.82
  4. Step 4: Simplify right side
    123,423.45x = 11,383,577,223.42
  5. Step 5: Solve for x
    x = 11,383,577,223.42/123,423.45
  6. Step 6: Final answer
    x = 92,231.88

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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.