Home / 140,378.55-193,710.74-76,716.20

Finding the Fourth Proportional to 140,378.55, 193,710.74 and 76,716.20

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Solution

The fourth proportional to 140,378.55, 193,710.74 and 76,716.20 is: 105,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,378.55 : 193,710.74 = 76,716.20 : x
  2. Step 2: Convert to fraction form
    140,378.55/193,710.74 = 76,716.20/x
  3. Step 3: Cross multiply
    140,378.55x = 193,710.74 × 76,716.20
  4. Step 4: Simplify right side
    140,378.55x = 14,860,750,519.85
  5. Step 5: Solve for x
    x = 14,860,750,519.85/140,378.55
  6. Step 6: Final answer
    x = 105,861.97

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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.