Home / 103,391.61-155,086.85-40,255.66

Finding the Fourth Proportional to 103,391.61, 155,086.85 and 40,255.66

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Solution

The fourth proportional to 103,391.61, 155,086.85 and 40,255.66 is: 60,383.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,391.61 : 155,086.85 = 40,255.66 : x
  2. Step 2: Convert to fraction form
    103,391.61/155,086.85 = 40,255.66/x
  3. Step 3: Cross multiply
    103,391.61x = 155,086.85 × 40,255.66
  4. Step 4: Simplify right side
    103,391.61x = 6,243,123,362.39
  5. Step 5: Solve for x
    x = 6,243,123,362.39/103,391.61
  6. Step 6: Final answer
    x = 60,383.27

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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.