Home / 103,709.20-155,640.60-41,424.40

Finding the Fourth Proportional to 103,709.20, 155,640.60 and 41,424.40

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Solution

The fourth proportional to 103,709.20, 155,640.60 and 41,424.40 is: 62,167.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,709.20 : 155,640.60 = 41,424.40 : x
  2. Step 2: Convert to fraction form
    103,709.20/155,640.60 = 41,424.40/x
  3. Step 3: Cross multiply
    103,709.20x = 155,640.60 × 41,424.40
  4. Step 4: Simplify right side
    103,709.20x = 6,447,318,470.64
  5. Step 5: Solve for x
    x = 6,447,318,470.64/103,709.20
  6. Step 6: Final answer
    x = 62,167.28

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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.