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Finding the Fourth Proportional to 159,432.63, 220,027.01 and 87,812.62

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Solution

The fourth proportional to 159,432.63, 220,027.01 and 87,812.62 is: 121,186.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,432.63 : 220,027.01 = 87,812.62 : x
  2. Step 2: Convert to fraction form
    159,432.63/220,027.01 = 87,812.62/x
  3. Step 3: Cross multiply
    159,432.63x = 220,027.01 × 87,812.62
  4. Step 4: Simplify right side
    159,432.63x = 19,321,148,218.87
  5. Step 5: Solve for x
    x = 19,321,148,218.87/159,432.63
  6. Step 6: Final answer
    x = 121,186.91

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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.