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Finding the Fourth Proportional to 120,589.66, 166,423.71 and 66,892.03

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Solution

The fourth proportional to 120,589.66, 166,423.71 and 66,892.03 is: 92,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,589.66 : 166,423.71 = 66,892.03 : x
  2. Step 2: Convert to fraction form
    120,589.66/166,423.71 = 66,892.03/x
  3. Step 3: Cross multiply
    120,589.66x = 166,423.71 × 66,892.03
  4. Step 4: Simplify right side
    120,589.66x = 11,132,419,802.03
  5. Step 5: Solve for x
    x = 11,132,419,802.03/120,589.66
  6. Step 6: Final answer
    x = 92,316.54

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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.