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Finding the Fourth Proportional to 143,458.56, 215,002.56 and 119,617.80

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Solution

The fourth proportional to 143,458.56, 215,002.56 and 119,617.80 is: 179,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,458.56 : 215,002.56 = 119,617.80 : x
  2. Step 2: Convert to fraction form
    143,458.56/215,002.56 = 119,617.80/x
  3. Step 3: Cross multiply
    143,458.56x = 215,002.56 × 119,617.80
  4. Step 4: Simplify right side
    143,458.56x = 25,718,133,221.57
  5. Step 5: Solve for x
    x = 25,718,133,221.57/143,458.56
  6. Step 6: Final answer
    x = 179,272.21

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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.