Home / 68,770.15-103,154.37-18,850.20

Finding the Fourth Proportional to 68,770.15, 103,154.37 and 18,850.20

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Solution

The fourth proportional to 68,770.15, 103,154.37 and 18,850.20 is: 28,275.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,770.15 : 103,154.37 = 18,850.20 : x
  2. Step 2: Convert to fraction form
    68,770.15/103,154.37 = 18,850.20/x
  3. Step 3: Cross multiply
    68,770.15x = 103,154.37 × 18,850.20
  4. Step 4: Simplify right side
    68,770.15x = 1,944,480,505.37
  5. Step 5: Solve for x
    x = 1,944,480,505.37/68,770.15
  6. Step 6: Final answer
    x = 28,275.07

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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.