Home / 100,452.62-138,624.19-55,131.34

Finding the Fourth Proportional to 100,452.62, 138,624.19 and 55,131.34

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Solution

The fourth proportional to 100,452.62, 138,624.19 and 55,131.34 is: 76,081.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,452.62 : 138,624.19 = 55,131.34 : x
  2. Step 2: Convert to fraction form
    100,452.62/138,624.19 = 55,131.34/x
  3. Step 3: Cross multiply
    100,452.62x = 138,624.19 × 55,131.34
  4. Step 4: Simplify right side
    100,452.62x = 7,642,537,351.11
  5. Step 5: Solve for x
    x = 7,642,537,351.11/100,452.62
  6. Step 6: Final answer
    x = 76,081.02

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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.