Home / 108,039.20-161,767.20-84,711.20

Finding the Fourth Proportional to 108,039.20, 161,767.20 and 84,711.20

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Solution

The fourth proportional to 108,039.20, 161,767.20 and 84,711.20 is: 126,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,039.20 : 161,767.20 = 84,711.20 : x
  2. Step 2: Convert to fraction form
    108,039.20/161,767.20 = 84,711.20/x
  3. Step 3: Cross multiply
    108,039.20x = 161,767.20 × 84,711.20
  4. Step 4: Simplify right side
    108,039.20x = 13,703,493,632.64
  5. Step 5: Solve for x
    x = 13,703,493,632.64/108,039.20
  6. Step 6: Final answer
    x = 126,838.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.