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Finding the Fourth Proportional to 132,861.76, 183,245.55 and 85,119.55

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Solution

The fourth proportional to 132,861.76, 183,245.55 and 85,119.55 is: 117,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,861.76 : 183,245.55 = 85,119.55 : x
  2. Step 2: Convert to fraction form
    132,861.76/183,245.55 = 85,119.55/x
  3. Step 3: Cross multiply
    132,861.76x = 183,245.55 × 85,119.55
  4. Step 4: Simplify right side
    132,861.76x = 15,597,778,755.50
  5. Step 5: Solve for x
    x = 15,597,778,755.50/132,861.76
  6. Step 6: Final answer
    x = 117,398.56

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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.