Home / 109,660.18-164,115.99-91,910.87

Finding the Fourth Proportional to 109,660.18, 164,115.99 and 91,910.87

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Solution

The fourth proportional to 109,660.18, 164,115.99 and 91,910.87 is: 137,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,660.18 : 164,115.99 = 91,910.87 : x
  2. Step 2: Convert to fraction form
    109,660.18/164,115.99 = 91,910.87/x
  3. Step 3: Cross multiply
    109,660.18x = 164,115.99 × 91,910.87
  4. Step 4: Simplify right side
    109,660.18x = 15,084,043,216.67
  5. Step 5: Solve for x
    x = 15,084,043,216.67/109,660.18
  6. Step 6: Final answer
    x = 137,552.60

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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.