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Finding the Fourth Proportional to 123,206.52, 170,024.76 and 66,617.76

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Solution

The fourth proportional to 123,206.52, 170,024.76 and 66,617.76 is: 91,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,206.52 : 170,024.76 = 66,617.76 : x
  2. Step 2: Convert to fraction form
    123,206.52/170,024.76 = 66,617.76/x
  3. Step 3: Cross multiply
    123,206.52x = 170,024.76 × 66,617.76
  4. Step 4: Simplify right side
    123,206.52x = 11,326,668,655.74
  5. Step 5: Solve for x
    x = 11,326,668,655.74/123,206.52
  6. Step 6: Final answer
    x = 91,932.38

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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.