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Finding the Fourth Proportional to 143,318.67, 215,064.40 and 49,890.03

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Solution

The fourth proportional to 143,318.67, 215,064.40 and 49,890.03 is: 74,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,318.67 : 215,064.40 = 49,890.03 : x
  2. Step 2: Convert to fraction form
    143,318.67/215,064.40 = 49,890.03/x
  3. Step 3: Cross multiply
    143,318.67x = 215,064.40 × 49,890.03
  4. Step 4: Simplify right side
    143,318.67x = 10,729,568,292.61
  5. Step 5: Solve for x
    x = 10,729,568,292.61/143,318.67
  6. Step 6: Final answer
    x = 74,865.11

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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.