Home / 80,200.72-110,429.96-71,232.65

Finding the Fourth Proportional to 80,200.72, 110,429.96 and 71,232.65

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Solution

The fourth proportional to 80,200.72, 110,429.96 and 71,232.65 is: 98,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,200.72 : 110,429.96 = 71,232.65 : x
  2. Step 2: Convert to fraction form
    80,200.72/110,429.96 = 71,232.65/x
  3. Step 3: Cross multiply
    80,200.72x = 110,429.96 × 71,232.65
  4. Step 4: Simplify right side
    80,200.72x = 7,866,218,690.19
  5. Step 5: Solve for x
    x = 7,866,218,690.19/80,200.72
  6. Step 6: Final answer
    x = 98,081.65

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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.