Home / 100,324.29-138,447.49-55,001.30

Finding the Fourth Proportional to 100,324.29, 138,447.49 and 55,001.30

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Solution

The fourth proportional to 100,324.29, 138,447.49 and 55,001.30 is: 75,901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,324.29 : 138,447.49 = 55,001.30 : x
  2. Step 2: Convert to fraction form
    100,324.29/138,447.49 = 55,001.30/x
  3. Step 3: Cross multiply
    100,324.29x = 138,447.49 × 55,001.30
  4. Step 4: Simplify right side
    100,324.29x = 7,614,792,140.35
  5. Step 5: Solve for x
    x = 7,614,792,140.35/100,324.29
  6. Step 6: Final answer
    x = 75,901.78

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1.5x scale

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.