Home / 121,956.43-182,934.64-80,393.71

Finding the Fourth Proportional to 121,956.43, 182,934.64 and 80,393.71

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Solution

The fourth proportional to 121,956.43, 182,934.64 and 80,393.71 is: 120,590.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,956.43 : 182,934.64 = 80,393.71 : x
  2. Step 2: Convert to fraction form
    121,956.43/182,934.64 = 80,393.71/x
  3. Step 3: Cross multiply
    121,956.43x = 182,934.64 × 80,393.71
  4. Step 4: Simplify right side
    121,956.43x = 14,706,793,738.79
  5. Step 5: Solve for x
    x = 14,706,793,738.79/121,956.43
  6. Step 6: Final answer
    x = 120,590.56

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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.