Home / 115,215.55-172,704.56-44,118.78

Finding the Fourth Proportional to 115,215.55, 172,704.56 and 44,118.78

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Solution

The fourth proportional to 115,215.55, 172,704.56 and 44,118.78 is: 66,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,215.55 : 172,704.56 = 44,118.78 : x
  2. Step 2: Convert to fraction form
    115,215.55/172,704.56 = 44,118.78/x
  3. Step 3: Cross multiply
    115,215.55x = 172,704.56 × 44,118.78
  4. Step 4: Simplify right side
    115,215.55x = 7,619,513,619.40
  5. Step 5: Solve for x
    x = 7,619,513,619.40/115,215.55
  6. Step 6: Final answer
    x = 66,132.69

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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.