Home / 129,234.17-178,351.31-72,649.19

Finding the Fourth Proportional to 129,234.17, 178,351.31 and 72,649.19

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Solution

The fourth proportional to 129,234.17, 178,351.31 and 72,649.19 is: 100,260.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,234.17 : 178,351.31 = 72,649.19 : x
  2. Step 2: Convert to fraction form
    129,234.17/178,351.31 = 72,649.19/x
  3. Step 3: Cross multiply
    129,234.17x = 178,351.31 × 72,649.19
  4. Step 4: Simplify right side
    129,234.17x = 12,957,077,496.81
  5. Step 5: Solve for x
    x = 12,957,077,496.81/129,234.17
  6. Step 6: Final answer
    x = 100,260.47

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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.