Home / 99,726.08-137,432.04-71,382.56

Finding the Fourth Proportional to 99,726.08, 137,432.04 and 71,382.56

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Solution

The fourth proportional to 99,726.08, 137,432.04 and 71,382.56 is: 98,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,726.08 : 137,432.04 = 71,382.56 : x
  2. Step 2: Convert to fraction form
    99,726.08/137,432.04 = 71,382.56/x
  3. Step 3: Cross multiply
    99,726.08x = 137,432.04 × 71,382.56
  4. Step 4: Simplify right side
    99,726.08x = 9,810,250,841.22
  5. Step 5: Solve for x
    x = 9,810,250,841.22/99,726.08
  6. Step 6: Final answer
    x = 98,371.97

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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.