Home / 143,749.98-215,470.14-68,710.56

Finding the Fourth Proportional to 143,749.98, 215,470.14 and 68,710.56

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Solution

The fourth proportional to 143,749.98, 215,470.14 and 68,710.56 is: 102,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,749.98 : 215,470.14 = 68,710.56 : x
  2. Step 2: Convert to fraction form
    143,749.98/215,470.14 = 68,710.56/x
  3. Step 3: Cross multiply
    143,749.98x = 215,470.14 × 68,710.56
  4. Step 4: Simplify right side
    143,749.98x = 14,805,073,982.68
  5. Step 5: Solve for x
    x = 14,805,073,982.68/143,749.98
  6. Step 6: Final answer
    x = 102,991.83

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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.