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Finding the Fourth Proportional to 121,249.20, 181,873.80 and 83,924.40

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Solution

The fourth proportional to 121,249.20, 181,873.80 and 83,924.40 is: 125,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,249.20 : 181,873.80 = 83,924.40 : x
  2. Step 2: Convert to fraction form
    121,249.20/181,873.80 = 83,924.40/x
  3. Step 3: Cross multiply
    121,249.20x = 181,873.80 × 83,924.40
  4. Step 4: Simplify right side
    121,249.20x = 15,263,649,540.72
  5. Step 5: Solve for x
    x = 15,263,649,540.72/121,249.20
  6. Step 6: Final answer
    x = 125,886.60

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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.