Home / 100,324.10-138,443.51-55,001.03

Finding the Fourth Proportional to 100,324.10, 138,443.51 and 55,001.03

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Solution

The fourth proportional to 100,324.10, 138,443.51 and 55,001.03 is: 75,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,324.10 : 138,443.51 = 55,001.03 : x
  2. Step 2: Convert to fraction form
    100,324.10/138,443.51 = 55,001.03/x
  3. Step 3: Cross multiply
    100,324.10x = 138,443.51 × 55,001.03
  4. Step 4: Simplify right side
    100,324.10x = 7,614,535,092.10
  5. Step 5: Solve for x
    x = 7,614,535,092.10/100,324.10
  6. Step 6: Final answer
    x = 75,899.36

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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.