Home / 110,725.20-166,087.80-81,200.70

Finding the Fourth Proportional to 110,725.20, 166,087.80 and 81,200.70

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Solution

The fourth proportional to 110,725.20, 166,087.80 and 81,200.70 is: 121,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,725.20 : 166,087.80 = 81,200.70 : x
  2. Step 2: Convert to fraction form
    110,725.20/166,087.80 = 81,200.70/x
  3. Step 3: Cross multiply
    110,725.20x = 166,087.80 × 81,200.70
  4. Step 4: Simplify right side
    110,725.20x = 13,486,445,621.46
  5. Step 5: Solve for x
    x = 13,486,445,621.46/110,725.20
  6. Step 6: Final answer
    x = 121,801.05

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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.