Home / 140,296.20-193,613.22-76,639.88

Finding the Fourth Proportional to 140,296.20, 193,613.22 and 76,639.88

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Solution

The fourth proportional to 140,296.20, 193,613.22 and 76,639.88 is: 105,765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,296.20 : 193,613.22 = 76,639.88 : x
  2. Step 2: Convert to fraction form
    140,296.20/193,613.22 = 76,639.88/x
  3. Step 3: Cross multiply
    140,296.20x = 193,613.22 × 76,639.88
  4. Step 4: Simplify right side
    140,296.20x = 14,838,493,947.21
  5. Step 5: Solve for x
    x = 14,838,493,947.21/140,296.20
  6. Step 6: Final answer
    x = 105,765.47

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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.