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Finding the Fourth Proportional to 155,311.20, 232,999.20 and 88,696.80

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Solution

The fourth proportional to 155,311.20, 232,999.20 and 88,696.80 is: 133,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,311.20 : 232,999.20 = 88,696.80 : x
  2. Step 2: Convert to fraction form
    155,311.20/232,999.20 = 88,696.80/x
  3. Step 3: Cross multiply
    155,311.20x = 232,999.20 × 88,696.80
  4. Step 4: Simplify right side
    155,311.20x = 20,666,283,442.56
  5. Step 5: Solve for x
    x = 20,666,283,442.56/155,311.20
  6. Step 6: Final answer
    x = 133,063.70

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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.