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Finding the Fourth Proportional to 171,251.43, 236,421.98 and 103,285.54

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Solution

The fourth proportional to 171,251.43, 236,421.98 and 103,285.54 is: 142,591.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,251.43 : 236,421.98 = 103,285.54 : x
  2. Step 2: Convert to fraction form
    171,251.43/236,421.98 = 103,285.54/x
  3. Step 3: Cross multiply
    171,251.43x = 236,421.98 × 103,285.54
  4. Step 4: Simplify right side
    171,251.43x = 24,418,971,872.17
  5. Step 5: Solve for x
    x = 24,418,971,872.17/171,251.43
  6. Step 6: Final answer
    x = 142,591.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.