Home / 80,812.42-121,218.85-80,695.64

Finding the Fourth Proportional to 80,812.42, 121,218.85 and 80,695.64

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Solution

The fourth proportional to 80,812.42, 121,218.85 and 80,695.64 is: 121,043.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,812.42 : 121,218.85 = 80,695.64 : x
  2. Step 2: Convert to fraction form
    80,812.42/121,218.85 = 80,695.64/x
  3. Step 3: Cross multiply
    80,812.42x = 121,218.85 × 80,695.64
  4. Step 4: Simplify right side
    80,812.42x = 9,781,833,084.73
  5. Step 5: Solve for x
    x = 9,781,833,084.73/80,812.42
  6. Step 6: Final answer
    x = 121,043.69

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1.5x scale

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.