Home / 107,839.78-161,612.04-68,424.58

Finding the Fourth Proportional to 107,839.78, 161,612.04 and 68,424.58

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Solution

The fourth proportional to 107,839.78, 161,612.04 and 68,424.58 is: 102,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,839.78 : 161,612.04 = 68,424.58 : x
  2. Step 2: Convert to fraction form
    107,839.78/161,612.04 = 68,424.58/x
  3. Step 3: Cross multiply
    107,839.78x = 161,612.04 × 68,424.58
  4. Step 4: Simplify right side
    107,839.78x = 11,058,235,959.94
  5. Step 5: Solve for x
    x = 11,058,235,959.94/107,839.78
  6. Step 6: Final answer
    x = 102,543.20

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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.