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Finding the Fourth Proportional to 108,319.80, 162,414.90 and 55,831.80

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Solution

The fourth proportional to 108,319.80, 162,414.90 and 55,831.80 is: 83,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,319.80 : 162,414.90 = 55,831.80 : x
  2. Step 2: Convert to fraction form
    108,319.80/162,414.90 = 55,831.80/x
  3. Step 3: Cross multiply
    108,319.80x = 162,414.90 × 55,831.80
  4. Step 4: Simplify right side
    108,319.80x = 9,067,916,213.82
  5. Step 5: Solve for x
    x = 9,067,916,213.82/108,319.80
  6. Step 6: Final answer
    x = 83,714.30

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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.