Home / 143,822.80-215,734.20-80,837.20

Finding the Fourth Proportional to 143,822.80, 215,734.20 and 80,837.20

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Solution

The fourth proportional to 143,822.80, 215,734.20 and 80,837.20 is: 121,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,822.80 : 215,734.20 = 80,837.20 : x
  2. Step 2: Convert to fraction form
    143,822.80/215,734.20 = 80,837.20/x
  3. Step 3: Cross multiply
    143,822.80x = 215,734.20 × 80,837.20
  4. Step 4: Simplify right side
    143,822.80x = 17,439,348,672.24
  5. Step 5: Solve for x
    x = 17,439,348,672.24/143,822.80
  6. Step 6: Final answer
    x = 121,255.80

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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.