Home / 123,739.56-170,759.70-67,149.72

Finding the Fourth Proportional to 123,739.56, 170,759.70 and 67,149.72

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Solution

The fourth proportional to 123,739.56, 170,759.70 and 67,149.72 is: 92,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,739.56 : 170,759.70 = 67,149.72 : x
  2. Step 2: Convert to fraction form
    123,739.56/170,759.70 = 67,149.72/x
  3. Step 3: Cross multiply
    123,739.56x = 170,759.70 × 67,149.72
  4. Step 4: Simplify right side
    123,739.56x = 11,466,466,042.28
  5. Step 5: Solve for x
    x = 11,466,466,042.28/123,739.56
  6. Step 6: Final answer
    x = 92,666.13

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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.