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Finding the Fourth Proportional to 143,369.97, 215,098.69 and 73,298.49

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Solution

The fourth proportional to 143,369.97, 215,098.69 and 73,298.49 is: 109,970.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,369.97 : 215,098.69 = 73,298.49 : x
  2. Step 2: Convert to fraction form
    143,369.97/215,098.69 = 73,298.49/x
  3. Step 3: Cross multiply
    143,369.97x = 215,098.69 × 73,298.49
  4. Step 4: Simplify right side
    143,369.97x = 15,766,409,177.98
  5. Step 5: Solve for x
    x = 15,766,409,177.98/143,369.97
  6. Step 6: Final answer
    x = 109,970.09

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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.