Home / 143,335.20-215,002.80-43,490.55

Finding the Fourth Proportional to 143,335.20, 215,002.80 and 43,490.55

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Solution

The fourth proportional to 143,335.20, 215,002.80 and 43,490.55 is: 65,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,335.20 : 215,002.80 = 43,490.55 : x
  2. Step 2: Convert to fraction form
    143,335.20/215,002.80 = 43,490.55/x
  3. Step 3: Cross multiply
    143,335.20x = 215,002.80 × 43,490.55
  4. Step 4: Simplify right side
    143,335.20x = 9,350,590,023.54
  5. Step 5: Solve for x
    x = 9,350,590,023.54/143,335.20
  6. Step 6: Final answer
    x = 65,235.83

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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.