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Finding the Fourth Proportional to 159,649.37, 239,251.64 and 80,671.40

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Solution

The fourth proportional to 159,649.37, 239,251.64 and 80,671.40 is: 120,894.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,649.37 : 239,251.64 = 80,671.40 : x
  2. Step 2: Convert to fraction form
    159,649.37/239,251.64 = 80,671.40/x
  3. Step 3: Cross multiply
    159,649.37x = 239,251.64 × 80,671.40
  4. Step 4: Simplify right side
    159,649.37x = 19,300,763,151.48
  5. Step 5: Solve for x
    x = 19,300,763,151.48/159,649.37
  6. Step 6: Final answer
    x = 120,894.71

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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.