Home / 123,755.10-170,781.05-67,166.48

Finding the Fourth Proportional to 123,755.10, 170,781.05 and 67,166.48

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Solution

The fourth proportional to 123,755.10, 170,781.05 and 67,166.48 is: 92,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,755.10 : 170,781.05 = 67,166.48 : x
  2. Step 2: Convert to fraction form
    123,755.10/170,781.05 = 67,166.48/x
  3. Step 3: Cross multiply
    123,755.10x = 170,781.05 × 67,166.48
  4. Step 4: Simplify right side
    123,755.10x = 11,470,760,789.47
  5. Step 5: Solve for x
    x = 11,470,760,789.47/123,755.10
  6. Step 6: Final answer
    x = 92,689.20

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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.