Home / 103,659.05-155,390.06-40,519.65

Finding the Fourth Proportional to 103,659.05, 155,390.06 and 40,519.65

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Solution

The fourth proportional to 103,659.05, 155,390.06 and 40,519.65 is: 60,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,659.05 : 155,390.06 = 40,519.65 : x
  2. Step 2: Convert to fraction form
    103,659.05/155,390.06 = 40,519.65/x
  3. Step 3: Cross multiply
    103,659.05x = 155,390.06 × 40,519.65
  4. Step 4: Simplify right side
    103,659.05x = 6,296,351,528.69
  5. Step 5: Solve for x
    x = 6,296,351,528.69/103,659.05
  6. Step 6: Final answer
    x = 60,740.97

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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.