Home / 121,830.20-182,502.30-107,217.80

Finding the Fourth Proportional to 121,830.20, 182,502.30 and 107,217.80

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Solution

The fourth proportional to 121,830.20, 182,502.30 and 107,217.80 is: 160,612.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,830.20 : 182,502.30 = 107,217.80 : x
  2. Step 2: Convert to fraction form
    121,830.20/182,502.30 = 107,217.80/x
  3. Step 3: Cross multiply
    121,830.20x = 182,502.30 × 107,217.80
  4. Step 4: Simplify right side
    121,830.20x = 19,567,495,100.94
  5. Step 5: Solve for x
    x = 19,567,495,100.94/121,830.20
  6. Step 6: Final answer
    x = 160,612.85

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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.