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Finding the Fourth Proportional to 143,847.78, 215,393.67 and 115,618.02

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Solution

The fourth proportional to 143,847.78, 215,393.67 and 115,618.02 is: 173,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,847.78 : 215,393.67 = 115,618.02 : x
  2. Step 2: Convert to fraction form
    143,847.78/215,393.67 = 115,618.02/x
  3. Step 3: Cross multiply
    143,847.78x = 215,393.67 × 115,618.02
  4. Step 4: Simplify right side
    143,847.78x = 24,903,389,645.93
  5. Step 5: Solve for x
    x = 24,903,389,645.93/143,847.78
  6. Step 6: Final answer
    x = 173,123.21

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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.