Home / 80,818.72-111,499.66-80,694.13

Finding the Fourth Proportional to 80,818.72, 111,499.66 and 80,694.13

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Solution

The fourth proportional to 80,818.72, 111,499.66 and 80,694.13 is: 111,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,818.72 : 111,499.66 = 80,694.13 : x
  2. Step 2: Convert to fraction form
    80,818.72/111,499.66 = 80,694.13/x
  3. Step 3: Cross multiply
    80,818.72x = 111,499.66 × 80,694.13
  4. Step 4: Simplify right side
    80,818.72x = 8,997,368,059.00
  5. Step 5: Solve for x
    x = 8,997,368,059.00/80,818.72
  6. Step 6: Final answer
    x = 111,327.77

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1.5x scale

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.