Home / 100,324.43-138,444.04-55,001.42

Finding the Fourth Proportional to 100,324.43, 138,444.04 and 55,001.42

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Solution

The fourth proportional to 100,324.43, 138,444.04 and 55,001.42 is: 75,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,324.43 : 138,444.04 = 55,001.42 : x
  2. Step 2: Convert to fraction form
    100,324.43/138,444.04 = 55,001.42/x
  3. Step 3: Cross multiply
    100,324.43x = 138,444.04 × 55,001.42
  4. Step 4: Simplify right side
    100,324.43x = 7,614,618,356.19
  5. Step 5: Solve for x
    x = 7,614,618,356.19/100,324.43
  6. Step 6: Final answer
    x = 75,899.94

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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.