Home / 100,098.18-138,131.33-54,775.04

Finding the Fourth Proportional to 100,098.18, 138,131.33 and 54,775.04

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Solution

The fourth proportional to 100,098.18, 138,131.33 and 54,775.04 is: 75,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,098.18 : 138,131.33 = 54,775.04 : x
  2. Step 2: Convert to fraction form
    100,098.18/138,131.33 = 54,775.04/x
  3. Step 3: Cross multiply
    100,098.18x = 138,131.33 × 54,775.04
  4. Step 4: Simplify right side
    100,098.18x = 7,566,148,161.47
  5. Step 5: Solve for x
    x = 7,566,148,161.47/100,098.18
  6. Step 6: Final answer
    x = 75,587.27

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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.