Home / 109,620.40-164,236.20-89,791.60

Finding the Fourth Proportional to 109,620.40, 164,236.20 and 89,791.60

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Solution

The fourth proportional to 109,620.40, 164,236.20 and 89,791.60 is: 134,528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,620.40 : 164,236.20 = 89,791.60 : x
  2. Step 2: Convert to fraction form
    109,620.40/164,236.20 = 89,791.60/x
  3. Step 3: Cross multiply
    109,620.40x = 164,236.20 × 89,791.60
  4. Step 4: Simplify right side
    109,620.40x = 14,747,031,175.92
  5. Step 5: Solve for x
    x = 14,747,031,175.92/109,620.40
  6. Step 6: Final answer
    x = 134,528.16

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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.