Home / 143,381.40-215,115.84-73,309.92

Finding the Fourth Proportional to 143,381.40, 215,115.84 and 73,309.92

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Solution

The fourth proportional to 143,381.40, 215,115.84 and 73,309.92 is: 109,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,381.40 : 215,115.84 = 73,309.92 : x
  2. Step 2: Convert to fraction form
    143,381.40/215,115.84 = 73,309.92/x
  3. Step 3: Cross multiply
    143,381.40x = 215,115.84 × 73,309.92
  4. Step 4: Simplify right side
    143,381.40x = 15,770,125,021.13
  5. Step 5: Solve for x
    x = 15,770,125,021.13/143,381.40
  6. Step 6: Final answer
    x = 109,987.24

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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.