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Finding the Fourth Proportional to 121,333.60, 182,194.80 and 91,784.80

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Solution

The fourth proportional to 121,333.60, 182,194.80 and 91,784.80 is: 137,824.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,333.60 : 182,194.80 = 91,784.80 : x
  2. Step 2: Convert to fraction form
    121,333.60/182,194.80 = 91,784.80/x
  3. Step 3: Cross multiply
    121,333.60x = 182,194.80 × 91,784.80
  4. Step 4: Simplify right side
    121,333.60x = 16,722,713,279.04
  5. Step 5: Solve for x
    x = 16,722,713,279.04/121,333.60
  6. Step 6: Final answer
    x = 137,824.26

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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.