Home / 139,909.25-193,069.13-76,245.68

Finding the Fourth Proportional to 139,909.25, 193,069.13 and 76,245.68

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Solution

The fourth proportional to 139,909.25, 193,069.13 and 76,245.68 is: 105,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,909.25 : 193,069.13 = 76,245.68 : x
  2. Step 2: Convert to fraction form
    139,909.25/193,069.13 = 76,245.68/x
  3. Step 3: Cross multiply
    139,909.25x = 193,069.13 × 76,245.68
  4. Step 4: Simplify right side
    139,909.25x = 14,720,687,103.86
  5. Step 5: Solve for x
    x = 14,720,687,103.86/139,909.25
  6. Step 6: Final answer
    x = 105,215.97

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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.