Home / 129,454.48-193,932.96-79,388.60

Finding the Fourth Proportional to 129,454.48, 193,932.96 and 79,388.60

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Solution

The fourth proportional to 129,454.48, 193,932.96 and 79,388.60 is: 118,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,454.48 : 193,932.96 = 79,388.60 : x
  2. Step 2: Convert to fraction form
    129,454.48/193,932.96 = 79,388.60/x
  3. Step 3: Cross multiply
    129,454.48x = 193,932.96 × 79,388.60
  4. Step 4: Simplify right side
    129,454.48x = 15,396,066,188.26
  5. Step 5: Solve for x
    x = 15,396,066,188.26/129,454.48
  6. Step 6: Final answer
    x = 118,930.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.