Home / 103,131.13-154,696.81-28,251.92

Finding the Fourth Proportional to 103,131.13, 154,696.81 and 28,251.92

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Solution

The fourth proportional to 103,131.13, 154,696.81 and 28,251.92 is: 42,377.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,131.13 : 154,696.81 = 28,251.92 : x
  2. Step 2: Convert to fraction form
    103,131.13/154,696.81 = 28,251.92/x
  3. Step 3: Cross multiply
    103,131.13x = 154,696.81 × 28,251.92
  4. Step 4: Simplify right side
    103,131.13x = 4,370,481,478.75
  5. Step 5: Solve for x
    x = 4,370,481,478.75/103,131.13
  6. Step 6: Final answer
    x = 42,377.91

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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.