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Finding the Fourth Proportional to 159,241.92, 219,728.76 and 91,245.81

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Solution

The fourth proportional to 159,241.92, 219,728.76 and 91,245.81 is: 125,904.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,241.92 : 219,728.76 = 91,245.81 : x
  2. Step 2: Convert to fraction form
    159,241.92/219,728.76 = 91,245.81/x
  3. Step 3: Cross multiply
    159,241.92x = 219,728.76 × 91,245.81
  4. Step 4: Simplify right side
    159,241.92x = 20,049,328,686.50
  5. Step 5: Solve for x
    x = 20,049,328,686.50/159,241.92
  6. Step 6: Final answer
    x = 125,904.84

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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.