Home / 140,351.12-193,687.08-76,691.60

Finding the Fourth Proportional to 140,351.12, 193,687.08 and 76,691.60

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Solution

The fourth proportional to 140,351.12, 193,687.08 and 76,691.60 is: 105,835.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,351.12 : 193,687.08 = 76,691.60 : x
  2. Step 2: Convert to fraction form
    140,351.12/193,687.08 = 76,691.60/x
  3. Step 3: Cross multiply
    140,351.12x = 193,687.08 × 76,691.60
  4. Step 4: Simplify right side
    140,351.12x = 14,854,172,064.53
  5. Step 5: Solve for x
    x = 14,854,172,064.53/140,351.12
  6. Step 6: Final answer
    x = 105,835.79

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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.