Home / 123,344.28-170,215.11-66,755.70

Finding the Fourth Proportional to 123,344.28, 170,215.11 and 66,755.70

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Solution

The fourth proportional to 123,344.28, 170,215.11 and 66,755.70 is: 92,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,344.28 : 170,215.11 = 66,755.70 : x
  2. Step 2: Convert to fraction form
    123,344.28/170,215.11 = 66,755.70/x
  3. Step 3: Cross multiply
    123,344.28x = 170,215.11 × 66,755.70
  4. Step 4: Simplify right side
    123,344.28x = 11,362,828,818.63
  5. Step 5: Solve for x
    x = 11,362,828,818.63/123,344.28
  6. Step 6: Final answer
    x = 92,122.87

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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.