Home / 143,828.55-215,593.14-80,555.90

Finding the Fourth Proportional to 143,828.55, 215,593.14 and 80,555.90

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Solution

The fourth proportional to 143,828.55, 215,593.14 and 80,555.90 is: 120,750.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,828.55 : 215,593.14 = 80,555.90 : x
  2. Step 2: Convert to fraction form
    143,828.55/215,593.14 = 80,555.90/x
  3. Step 3: Cross multiply
    143,828.55x = 215,593.14 × 80,555.90
  4. Step 4: Simplify right side
    143,828.55x = 17,367,299,426.53
  5. Step 5: Solve for x
    x = 17,367,299,426.53/143,828.55
  6. Step 6: Final answer
    x = 120,750.02

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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.