Home / 129,090.60-193,221.52-68,968.85

Finding the Fourth Proportional to 129,090.60, 193,221.52 and 68,968.85

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Solution

The fourth proportional to 129,090.60, 193,221.52 and 68,968.85 is: 103,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,090.60 : 193,221.52 = 68,968.85 : x
  2. Step 2: Convert to fraction form
    129,090.60/193,221.52 = 68,968.85/x
  3. Step 3: Cross multiply
    129,090.60x = 193,221.52 × 68,968.85
  4. Step 4: Simplify right side
    129,090.60x = 13,326,264,891.12
  5. Step 5: Solve for x
    x = 13,326,264,891.12/129,090.60
  6. Step 6: Final answer
    x = 103,231.88

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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.