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Finding the Fourth Proportional to 159,380.80, 239,128.09 and 75,152.94

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Solution

The fourth proportional to 159,380.80, 239,128.09 and 75,152.94 is: 112,756.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,380.80 : 239,128.09 = 75,152.94 : x
  2. Step 2: Convert to fraction form
    159,380.80/239,128.09 = 75,152.94/x
  3. Step 3: Cross multiply
    159,380.80x = 239,128.09 × 75,152.94
  4. Step 4: Simplify right side
    159,380.80x = 17,971,177,915.47
  5. Step 5: Solve for x
    x = 17,971,177,915.47/159,380.80
  6. Step 6: Final answer
    x = 112,756.23

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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.