Home / 108,387.20-162,289.20-84,864.80

Finding the Fourth Proportional to 108,387.20, 162,289.20 and 84,864.80

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Solution

The fourth proportional to 108,387.20, 162,289.20 and 84,864.80 is: 127,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,387.20 : 162,289.20 = 84,864.80 : x
  2. Step 2: Convert to fraction form
    108,387.20/162,289.20 = 84,864.80/x
  3. Step 3: Cross multiply
    108,387.20x = 162,289.20 × 84,864.80
  4. Step 4: Simplify right side
    108,387.20x = 13,772,640,500.16
  5. Step 5: Solve for x
    x = 13,772,640,500.16/108,387.20
  6. Step 6: Final answer
    x = 127,068.88

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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.