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Finding the Fourth Proportional to 155,355, 232,531.26 and 80,371.88

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Solution

The fourth proportional to 155,355, 232,531.26 and 80,371.88 is: 120,298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,355 : 232,531.26 = 80,371.88 : x
  2. Step 2: Convert to fraction form
    155,355/232,531.26 = 80,371.88/x
  3. Step 3: Cross multiply
    155,355x = 232,531.26 × 80,371.88
  4. Step 4: Simplify right side
    155,355x = 18,688,974,524.97
  5. Step 5: Solve for x
    x = 18,688,974,524.97/155,355
  6. Step 6: Final answer
    x = 120,298.51

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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.