Home / 123,428.10-170,331.30-66,839.52

Finding the Fourth Proportional to 123,428.10, 170,331.30 and 66,839.52

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Solution

The fourth proportional to 123,428.10, 170,331.30 and 66,839.52 is: 92,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,428.10 : 170,331.30 = 66,839.52 : x
  2. Step 2: Convert to fraction form
    123,428.10/170,331.30 = 66,839.52/x
  3. Step 3: Cross multiply
    123,428.10x = 170,331.30 × 66,839.52
  4. Step 4: Simplify right side
    123,428.10x = 11,384,862,332.98
  5. Step 5: Solve for x
    x = 11,384,862,332.98/123,428.10
  6. Step 6: Final answer
    x = 92,238.82

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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.