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Finding the Fourth Proportional to 159,115.66, 219,524.96 and 98,664.55

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Solution

The fourth proportional to 159,115.66, 219,524.96 and 98,664.55 is: 136,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,115.66 : 219,524.96 = 98,664.55 : x
  2. Step 2: Convert to fraction form
    159,115.66/219,524.96 = 98,664.55/x
  3. Step 3: Cross multiply
    159,115.66x = 219,524.96 × 98,664.55
  4. Step 4: Simplify right side
    159,115.66x = 21,659,330,720.02
  5. Step 5: Solve for x
    x = 21,659,330,720.02/159,115.66
  6. Step 6: Final answer
    x = 136,123.19

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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.