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Finding the Fourth Proportional to 159,203.79, 238,608.85 and 80,340.57

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Solution

The fourth proportional to 159,203.79, 238,608.85 and 80,340.57 is: 120,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,203.79 : 238,608.85 = 80,340.57 : x
  2. Step 2: Convert to fraction form
    159,203.79/238,608.85 = 80,340.57/x
  3. Step 3: Cross multiply
    159,203.79x = 238,608.85 × 80,340.57
  4. Step 4: Simplify right side
    159,203.79x = 19,169,969,622.15
  5. Step 5: Solve for x
    x = 19,169,969,622.15/159,203.79
  6. Step 6: Final answer
    x = 120,411.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.