Home / 109,579.20-164,077.20-69,921.60

Finding the Fourth Proportional to 109,579.20, 164,077.20 and 69,921.60

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Solution

The fourth proportional to 109,579.20, 164,077.20 and 69,921.60 is: 104,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,579.20 : 164,077.20 = 69,921.60 : x
  2. Step 2: Convert to fraction form
    109,579.20/164,077.20 = 69,921.60/x
  3. Step 3: Cross multiply
    109,579.20x = 164,077.20 × 69,921.60
  4. Step 4: Simplify right side
    109,579.20x = 11,472,540,347.52
  5. Step 5: Solve for x
    x = 11,472,540,347.52/109,579.20
  6. Step 6: Final answer
    x = 104,696.33

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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.