Home / 103,617.88-155,426.85-28,756.87

Finding the Fourth Proportional to 103,617.88, 155,426.85 and 28,756.87

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Solution

The fourth proportional to 103,617.88, 155,426.85 and 28,756.87 is: 43,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.88 : 155,426.85 = 28,756.87 : x
  2. Step 2: Convert to fraction form
    103,617.88/155,426.85 = 28,756.87/x
  3. Step 3: Cross multiply
    103,617.88x = 155,426.85 × 28,756.87
  4. Step 4: Simplify right side
    103,617.88x = 4,469,589,719.96
  5. Step 5: Solve for x
    x = 4,469,589,719.96/103,617.88
  6. Step 6: Final answer
    x = 43,135.31

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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.