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Finding the Fourth Proportional to 159,432.53, 220,026.87 and 87,812.54

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Solution

The fourth proportional to 159,432.53, 220,026.87 and 87,812.54 is: 121,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,432.53 : 220,026.87 = 87,812.54 : x
  2. Step 2: Convert to fraction form
    159,432.53/220,026.87 = 87,812.54/x
  3. Step 3: Cross multiply
    159,432.53x = 220,026.87 × 87,812.54
  4. Step 4: Simplify right side
    159,432.53x = 19,321,116,783.75
  5. Step 5: Solve for x
    x = 19,321,116,783.75/159,432.53
  6. Step 6: Final answer
    x = 121,186.79

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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.