Home / 143,984.79-215,976.27-77,456.25

Finding the Fourth Proportional to 143,984.79, 215,976.27 and 77,456.25

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Solution

The fourth proportional to 143,984.79, 215,976.27 and 77,456.25 is: 116,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,984.79 : 215,976.27 = 77,456.25 : x
  2. Step 2: Convert to fraction form
    143,984.79/215,976.27 = 77,456.25/x
  3. Step 3: Cross multiply
    143,984.79x = 215,976.27 × 77,456.25
  4. Step 4: Simplify right side
    143,984.79x = 16,728,712,253.65
  5. Step 5: Solve for x
    x = 16,728,712,253.65/143,984.79
  6. Step 6: Final answer
    x = 116,183.88

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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.