Home / 123,428.64-170,331.28-66,839.84

Finding the Fourth Proportional to 123,428.64, 170,331.28 and 66,839.84

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Solution

The fourth proportional to 123,428.64, 170,331.28 and 66,839.84 is: 92,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,428.64 : 170,331.28 = 66,839.84 : x
  2. Step 2: Convert to fraction form
    123,428.64/170,331.28 = 66,839.84/x
  3. Step 3: Cross multiply
    123,428.64x = 170,331.28 × 66,839.84
  4. Step 4: Simplify right side
    123,428.64x = 11,384,915,502.20
  5. Step 5: Solve for x
    x = 11,384,915,502.20/123,428.64
  6. Step 6: Final answer
    x = 92,238.85

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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.