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Finding the Fourth Proportional to 100,452.83, 138,483.15 and 71,764.85

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Solution

The fourth proportional to 100,452.83, 138,483.15 and 71,764.85 is: 98,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,452.83 : 138,483.15 = 71,764.85 : x
  2. Step 2: Convert to fraction form
    100,452.83/138,483.15 = 71,764.85/x
  3. Step 3: Cross multiply
    100,452.83x = 138,483.15 × 71,764.85
  4. Step 4: Simplify right side
    100,452.83x = 9,938,221,794.86
  5. Step 5: Solve for x
    x = 9,938,221,794.86/100,452.83
  6. Step 6: Final answer
    x = 98,934.22

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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.