Home / 158,023.26-218,131.39-103,578.93

Finding the Fourth Proportional to 158,023.26, 218,131.39 and 103,578.93

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Solution

The fourth proportional to 158,023.26, 218,131.39 and 103,578.93 is: 142,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,023.26 : 218,131.39 = 103,578.93 : x
  2. Step 2: Convert to fraction form
    158,023.26/218,131.39 = 103,578.93/x
  3. Step 3: Cross multiply
    158,023.26x = 218,131.39 × 103,578.93
  4. Step 4: Simplify right side
    158,023.26x = 22,593,816,105.09
  5. Step 5: Solve for x
    x = 22,593,816,105.09/158,023.26
  6. Step 6: Final answer
    x = 142,977.79

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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.