Home / 80,081.55-120,165.15-51,995.00

Finding the Fourth Proportional to 80,081.55, 120,165.15 and 51,995.00

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Solution

The fourth proportional to 80,081.55, 120,165.15 and 51,995.00 is: 78,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,081.55 : 120,165.15 = 51,995.00 : x
  2. Step 2: Convert to fraction form
    80,081.55/120,165.15 = 51,995.00/x
  3. Step 3: Cross multiply
    80,081.55x = 120,165.15 × 51,995.00
  4. Step 4: Simplify right side
    80,081.55x = 6,247,986,373.42
  5. Step 5: Solve for x
    x = 6,247,986,373.42/80,081.55
  6. Step 6: Final answer
    x = 78,020.30

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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.