Home / 103,078.97-154,486.31-89,696.35

Finding the Fourth Proportional to 103,078.97, 154,486.31 and 89,696.35

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Solution

The fourth proportional to 103,078.97, 154,486.31 and 89,696.35 is: 134,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.97 : 154,486.31 = 89,696.35 : x
  2. Step 2: Convert to fraction form
    103,078.97/154,486.31 = 89,696.35/x
  3. Step 3: Cross multiply
    103,078.97x = 154,486.31 × 89,696.35
  4. Step 4: Simplify right side
    103,078.97x = 13,856,857,359.54
  5. Step 5: Solve for x
    x = 13,856,857,359.54/103,078.97
  6. Step 6: Final answer
    x = 134,429.54

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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.