Home / 136,650.12-188,578.20-76,224.72

Finding the Fourth Proportional to 136,650.12, 188,578.20 and 76,224.72

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Solution

The fourth proportional to 136,650.12, 188,578.20 and 76,224.72 is: 105,190.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,650.12 : 188,578.20 = 76,224.72 : x
  2. Step 2: Convert to fraction form
    136,650.12/188,578.20 = 76,224.72/x
  3. Step 3: Cross multiply
    136,650.12x = 188,578.20 × 76,224.72
  4. Step 4: Simplify right side
    136,650.12x = 14,374,320,493.10
  5. Step 5: Solve for x
    x = 14,374,320,493.10/136,650.12
  6. Step 6: Final answer
    x = 105,190.69

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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.