Home / 123,860.16-170,997.84-81,541.71

Finding the Fourth Proportional to 123,860.16, 170,997.84 and 81,541.71

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Solution

The fourth proportional to 123,860.16, 170,997.84 and 81,541.71 is: 112,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,860.16 : 170,997.84 = 81,541.71 : x
  2. Step 2: Convert to fraction form
    123,860.16/170,997.84 = 81,541.71/x
  3. Step 3: Cross multiply
    123,860.16x = 170,997.84 × 81,541.71
  4. Step 4: Simplify right side
    123,860.16x = 13,943,456,279.91
  5. Step 5: Solve for x
    x = 13,943,456,279.91/123,860.16
  6. Step 6: Final answer
    x = 112,574.18

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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.