Home / 129,182.06-178,277.17-71,827.21

Finding the Fourth Proportional to 129,182.06, 178,277.17 and 71,827.21

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Solution

The fourth proportional to 129,182.06, 178,277.17 and 71,827.21 is: 99,124.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,182.06 : 178,277.17 = 71,827.21 : x
  2. Step 2: Convert to fraction form
    129,182.06/178,277.17 = 71,827.21/x
  3. Step 3: Cross multiply
    129,182.06x = 178,277.17 × 71,827.21
  4. Step 4: Simplify right side
    129,182.06x = 12,805,152,407.15
  5. Step 5: Solve for x
    x = 12,805,152,407.15/129,182.06
  6. Step 6: Final answer
    x = 99,124.85

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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.