Home / 111,519.12-153,845.06-71,212.71

Finding the Fourth Proportional to 111,519.12, 153,845.06 and 71,212.71

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Solution

The fourth proportional to 111,519.12, 153,845.06 and 71,212.71 is: 98,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,519.12 : 153,845.06 = 71,212.71 : x
  2. Step 2: Convert to fraction form
    111,519.12/153,845.06 = 71,212.71/x
  3. Step 3: Cross multiply
    111,519.12x = 153,845.06 × 71,212.71
  4. Step 4: Simplify right side
    111,519.12x = 10,955,723,286.65
  5. Step 5: Solve for x
    x = 10,955,723,286.65/111,519.12
  6. Step 6: Final answer
    x = 98,240.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.