Home / 136,847.34-188,850.25-76,418.70

Finding the Fourth Proportional to 136,847.34, 188,850.25 and 76,418.70

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Solution

The fourth proportional to 136,847.34, 188,850.25 and 76,418.70 is: 105,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,847.34 : 188,850.25 = 76,418.70 : x
  2. Step 2: Convert to fraction form
    136,847.34/188,850.25 = 76,418.70/x
  3. Step 3: Cross multiply
    136,847.34x = 188,850.25 × 76,418.70
  4. Step 4: Simplify right side
    136,847.34x = 14,431,690,599.68
  5. Step 5: Solve for x
    x = 14,431,690,599.68/136,847.34
  6. Step 6: Final answer
    x = 105,458.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.