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Finding the Fourth Proportional to 103,635.85, 155,453.78 and 101,907.85

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Solution

The fourth proportional to 103,635.85, 155,453.78 and 101,907.85 is: 152,861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.85 : 155,453.78 = 101,907.85 : x
  2. Step 2: Convert to fraction form
    103,635.85/155,453.78 = 101,907.85/x
  3. Step 3: Cross multiply
    103,635.85x = 155,453.78 × 101,907.85
  4. Step 4: Simplify right side
    103,635.85x = 15,841,960,494.17
  5. Step 5: Solve for x
    x = 15,841,960,494.17/103,635.85
  6. Step 6: Final answer
    x = 152,861.78

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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.