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Finding the Fourth Proportional to 159,242.92, 219,730.14 and 91,246.81

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Solution

The fourth proportional to 159,242.92, 219,730.14 and 91,246.81 is: 125,906.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,242.92 : 219,730.14 = 91,246.81 : x
  2. Step 2: Convert to fraction form
    159,242.92/219,730.14 = 91,246.81/x
  3. Step 3: Cross multiply
    159,242.92x = 219,730.14 × 91,246.81
  4. Step 4: Simplify right side
    159,242.92x = 20,049,674,335.85
  5. Step 5: Solve for x
    x = 20,049,674,335.85/159,242.92
  6. Step 6: Final answer
    x = 125,906.22

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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.