Home / 143,394.48-215,120.43-80,304.30

Finding the Fourth Proportional to 143,394.48, 215,120.43 and 80,304.30

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Solution

The fourth proportional to 143,394.48, 215,120.43 and 80,304.30 is: 120,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,394.48 : 215,120.43 = 80,304.30 : x
  2. Step 2: Convert to fraction form
    143,394.48/215,120.43 = 80,304.30/x
  3. Step 3: Cross multiply
    143,394.48x = 215,120.43 × 80,304.30
  4. Step 4: Simplify right side
    143,394.48x = 17,275,095,546.85
  5. Step 5: Solve for x
    x = 17,275,095,546.85/143,394.48
  6. Step 6: Final answer
    x = 120,472.53

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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.