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Finding the Fourth Proportional to 159,487.61, 220,093.45 and 87,867.46

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Solution

The fourth proportional to 159,487.61, 220,093.45 and 87,867.46 is: 121,257.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,487.61 : 220,093.45 = 87,867.46 : x
  2. Step 2: Convert to fraction form
    159,487.61/220,093.45 = 87,867.46/x
  3. Step 3: Cross multiply
    159,487.61x = 220,093.45 × 87,867.46
  4. Step 4: Simplify right side
    159,487.61x = 19,339,052,414.14
  5. Step 5: Solve for x
    x = 19,339,052,414.14/159,487.61
  6. Step 6: Final answer
    x = 121,257.40

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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.