Home / 123,318.28-170,179.68-66,729.66

Finding the Fourth Proportional to 123,318.28, 170,179.68 and 66,729.66

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Solution

The fourth proportional to 123,318.28, 170,179.68 and 66,729.66 is: 92,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,318.28 : 170,179.68 = 66,729.66 : x
  2. Step 2: Convert to fraction form
    123,318.28/170,179.68 = 66,729.66/x
  3. Step 3: Cross multiply
    123,318.28x = 170,179.68 × 66,729.66
  4. Step 4: Simplify right side
    123,318.28x = 11,356,031,797.37
  5. Step 5: Solve for x
    x = 11,356,031,797.37/123,318.28
  6. Step 6: Final answer
    x = 92,087.17

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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.