Home / 123,275.25-170,121.06-66,687.84

Finding the Fourth Proportional to 123,275.25, 170,121.06 and 66,687.84

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Solution

The fourth proportional to 123,275.25, 170,121.06 and 66,687.84 is: 92,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,275.25 : 170,121.06 = 66,687.84 : x
  2. Step 2: Convert to fraction form
    123,275.25/170,121.06 = 66,687.84/x
  3. Step 3: Cross multiply
    123,275.25x = 170,121.06 × 66,687.84
  4. Step 4: Simplify right side
    123,275.25x = 11,345,006,029.91
  5. Step 5: Solve for x
    x = 11,345,006,029.91/123,275.25
  6. Step 6: Final answer
    x = 92,029.88

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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.