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Finding the Fourth Proportional to 143,517.94, 215,287.91 and 43,686.65

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Solution

The fourth proportional to 143,517.94, 215,287.91 and 43,686.65 is: 65,533.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,517.94 : 215,287.91 = 43,686.65 : x
  2. Step 2: Convert to fraction form
    143,517.94/215,287.91 = 43,686.65/x
  3. Step 3: Cross multiply
    143,517.94x = 215,287.91 × 43,686.65
  4. Step 4: Simplify right side
    143,517.94x = 9,405,207,354.97
  5. Step 5: Solve for x
    x = 9,405,207,354.97/143,517.94
  6. Step 6: Final answer
    x = 65,533.32

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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.