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Finding the Fourth Proportional to 121,597.20, 182,541.60 and 68,331.60

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Solution

The fourth proportional to 121,597.20, 182,541.60 and 68,331.60 is: 102,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,597.20 : 182,541.60 = 68,331.60 : x
  2. Step 2: Convert to fraction form
    121,597.20/182,541.60 = 68,331.60/x
  3. Step 3: Cross multiply
    121,597.20x = 182,541.60 × 68,331.60
  4. Step 4: Simplify right side
    121,597.20x = 12,473,359,594.56
  5. Step 5: Solve for x
    x = 12,473,359,594.56/121,597.20
  6. Step 6: Final answer
    x = 102,579.33

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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.