Home / 115,085.61-158,872.19-99,713.43

Finding the Fourth Proportional to 115,085.61, 158,872.19 and 99,713.43

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Solution

The fourth proportional to 115,085.61, 158,872.19 and 99,713.43 is: 137,651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,085.61 : 158,872.19 = 99,713.43 : x
  2. Step 2: Convert to fraction form
    115,085.61/158,872.19 = 99,713.43/x
  3. Step 3: Cross multiply
    115,085.61x = 158,872.19 × 99,713.43
  4. Step 4: Simplify right side
    115,085.61x = 15,841,690,497.94
  5. Step 5: Solve for x
    x = 15,841,690,497.94/115,085.61
  6. Step 6: Final answer
    x = 137,651.36

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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.