Home / 123,288.28-170,138.22-66,700.12

Finding the Fourth Proportional to 123,288.28, 170,138.22 and 66,700.12

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Solution

The fourth proportional to 123,288.28, 170,138.22 and 66,700.12 is: 92,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,288.28 : 170,138.22 = 66,700.12 : x
  2. Step 2: Convert to fraction form
    123,288.28/170,138.22 = 66,700.12/x
  3. Step 3: Cross multiply
    123,288.28x = 170,138.22 × 66,700.12
  4. Step 4: Simplify right side
    123,288.28x = 11,348,239,690.59
  5. Step 5: Solve for x
    x = 11,348,239,690.59/123,288.28
  6. Step 6: Final answer
    x = 92,046.38

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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.