Home / 129,324.20-178,366.12-84,016.68

Finding the Fourth Proportional to 129,324.20, 178,366.12 and 84,016.68

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Solution

The fourth proportional to 129,324.20, 178,366.12 and 84,016.68 is: 115,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,324.20 : 178,366.12 = 84,016.68 : x
  2. Step 2: Convert to fraction form
    129,324.20/178,366.12 = 84,016.68/x
  3. Step 3: Cross multiply
    129,324.20x = 178,366.12 × 84,016.68
  4. Step 4: Simplify right side
    129,324.20x = 14,985,728,347.97
  5. Step 5: Solve for x
    x = 14,985,728,347.97/129,324.20
  6. Step 6: Final answer
    x = 115,877.22

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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.