Home / 109,849.20-164,838.60-72,517.20

Finding the Fourth Proportional to 109,849.20, 164,838.60 and 72,517.20

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Solution

The fourth proportional to 109,849.20, 164,838.60 and 72,517.20 is: 108,818.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,849.20 : 164,838.60 = 72,517.20 : x
  2. Step 2: Convert to fraction form
    109,849.20/164,838.60 = 72,517.20/x
  3. Step 3: Cross multiply
    109,849.20x = 164,838.60 × 72,517.20
  4. Step 4: Simplify right side
    109,849.20x = 11,953,633,723.92
  5. Step 5: Solve for x
    x = 11,953,633,723.92/109,849.20
  6. Step 6: Final answer
    x = 108,818.58

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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.