Home / 109,481.40-164,222.10-91,766.70

Finding the Fourth Proportional to 109,481.40, 164,222.10 and 91,766.70

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Solution

The fourth proportional to 109,481.40, 164,222.10 and 91,766.70 is: 137,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,481.40 : 164,222.10 = 91,766.70 : x
  2. Step 2: Convert to fraction form
    109,481.40/164,222.10 = 91,766.70/x
  3. Step 3: Cross multiply
    109,481.40x = 164,222.10 × 91,766.70
  4. Step 4: Simplify right side
    109,481.40x = 15,070,120,184.07
  5. Step 5: Solve for x
    x = 15,070,120,184.07/109,481.40
  6. Step 6: Final answer
    x = 137,650.05

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1.5x scale

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.