Home / 129,018.92-178,057.86-75,329.96

Finding the Fourth Proportional to 129,018.92, 178,057.86 and 75,329.96

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Solution

The fourth proportional to 129,018.92, 178,057.86 and 75,329.96 is: 103,962.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,018.92 : 178,057.86 = 75,329.96 : x
  2. Step 2: Convert to fraction form
    129,018.92/178,057.86 = 75,329.96/x
  3. Step 3: Cross multiply
    129,018.92x = 178,057.86 × 75,329.96
  4. Step 4: Simplify right side
    129,018.92x = 13,413,091,471.49
  5. Step 5: Solve for x
    x = 13,413,091,471.49/129,018.92
  6. Step 6: Final answer
    x = 103,962.21

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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.