Home / 103,660.05-155,391.56-40,520.65

Finding the Fourth Proportional to 103,660.05, 155,391.56 and 40,520.65

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Solution

The fourth proportional to 103,660.05, 155,391.56 and 40,520.65 is: 60,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,660.05 : 155,391.56 = 40,520.65 : x
  2. Step 2: Convert to fraction form
    103,660.05/155,391.56 = 40,520.65/x
  3. Step 3: Cross multiply
    103,660.05x = 155,391.56 × 40,520.65
  4. Step 4: Simplify right side
    103,660.05x = 6,296,567,015.71
  5. Step 5: Solve for x
    x = 6,296,567,015.71/103,660.05
  6. Step 6: Final answer
    x = 60,742.47

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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.