Home / 103,645.22-155,369.42-40,505.85

Finding the Fourth Proportional to 103,645.22, 155,369.42 and 40,505.85

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Solution

The fourth proportional to 103,645.22, 155,369.42 and 40,505.85 is: 60,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,645.22 : 155,369.42 = 40,505.85 : x
  2. Step 2: Convert to fraction form
    103,645.22/155,369.42 = 40,505.85/x
  3. Step 3: Cross multiply
    103,645.22x = 155,369.42 × 40,505.85
  4. Step 4: Simplify right side
    103,645.22x = 6,293,369,819.58
  5. Step 5: Solve for x
    x = 6,293,369,819.58/103,645.22
  6. Step 6: Final answer
    x = 60,720.31

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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.