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Finding the Fourth Proportional to 143,415.41, 215,221.12 and 49,921.16

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Solution

The fourth proportional to 143,415.41, 215,221.12 and 49,921.16 is: 74,915.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,415.41 : 215,221.12 = 49,921.16 : x
  2. Step 2: Convert to fraction form
    143,415.41/215,221.12 = 49,921.16/x
  3. Step 3: Cross multiply
    143,415.41x = 215,221.12 × 49,921.16
  4. Step 4: Simplify right side
    143,415.41x = 10,744,086,765.99
  5. Step 5: Solve for x
    x = 10,744,086,765.99/143,415.41
  6. Step 6: Final answer
    x = 74,915.85

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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.