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Finding the Fourth Proportional to 103,761.50, 155,849.68 and 100,356.62

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Solution

The fourth proportional to 103,761.50, 155,849.68 and 100,356.62 is: 150,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,761.50 : 155,849.68 = 100,356.62 : x
  2. Step 2: Convert to fraction form
    103,761.50/155,849.68 = 100,356.62/x
  3. Step 3: Cross multiply
    103,761.50x = 155,849.68 × 100,356.62
  4. Step 4: Simplify right side
    103,761.50x = 15,640,547,112.88
  5. Step 5: Solve for x
    x = 15,640,547,112.88/103,761.50
  6. Step 6: Final answer
    x = 150,735.55

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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.