Home / 109,933.20-164,964.60-72,601.20

Finding the Fourth Proportional to 109,933.20, 164,964.60 and 72,601.20

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Solution

The fourth proportional to 109,933.20, 164,964.60 and 72,601.20 is: 108,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,933.20 : 164,964.60 = 72,601.20 : x
  2. Step 2: Convert to fraction form
    109,933.20/164,964.60 = 72,601.20/x
  3. Step 3: Cross multiply
    109,933.20x = 164,964.60 × 72,601.20
  4. Step 4: Simplify right side
    109,933.20x = 11,976,627,917.52
  5. Step 5: Solve for x
    x = 11,976,627,917.52/109,933.20
  6. Step 6: Final answer
    x = 108,944.59

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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.