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Finding the Fourth Proportional to 143,796.30, 215,532.45 and 68,952.30

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Solution

The fourth proportional to 143,796.30, 215,532.45 and 68,952.30 is: 103,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,796.30 : 215,532.45 = 68,952.30 : x
  2. Step 2: Convert to fraction form
    143,796.30/215,532.45 = 68,952.30/x
  3. Step 3: Cross multiply
    143,796.30x = 215,532.45 × 68,952.30
  4. Step 4: Simplify right side
    143,796.30x = 14,861,458,152.14
  5. Step 5: Solve for x
    x = 14,861,458,152.14/143,796.30
  6. Step 6: Final answer
    x = 103,350.77

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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.