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Finding the Fourth Proportional to 155,147.80, 232,721.70 and 102,003.70

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Solution

The fourth proportional to 155,147.80, 232,721.70 and 102,003.70 is: 153,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,147.80 : 232,721.70 = 102,003.70 : x
  2. Step 2: Convert to fraction form
    155,147.80/232,721.70 = 102,003.70/x
  3. Step 3: Cross multiply
    155,147.80x = 232,721.70 × 102,003.70
  4. Step 4: Simplify right side
    155,147.80x = 23,738,474,470.29
  5. Step 5: Solve for x
    x = 23,738,474,470.29/155,147.80
  6. Step 6: Final answer
    x = 153,005.55

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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.