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Finding the Fourth Proportional to 121,524.40, 182,286.60 and 109,714.60

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Solution

The fourth proportional to 121,524.40, 182,286.60 and 109,714.60 is: 164,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,524.40 : 182,286.60 = 109,714.60 : x
  2. Step 2: Convert to fraction form
    121,524.40/182,286.60 = 109,714.60/x
  3. Step 3: Cross multiply
    121,524.40x = 182,286.60 × 109,714.60
  4. Step 4: Simplify right side
    121,524.40x = 19,999,501,404.36
  5. Step 5: Solve for x
    x = 19,999,501,404.36/121,524.40
  6. Step 6: Final answer
    x = 164,571.90

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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.