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Finding the Fourth Proportional to 120,600.66, 166,417.74 and 66,884.70

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Solution

The fourth proportional to 120,600.66, 166,417.74 and 66,884.70 is: 92,294.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,600.66 : 166,417.74 = 66,884.70 : x
  2. Step 2: Convert to fraction form
    120,600.66/166,417.74 = 66,884.70/x
  3. Step 3: Cross multiply
    120,600.66x = 166,417.74 × 66,884.70
  4. Step 4: Simplify right side
    120,600.66x = 11,130,800,614.58
  5. Step 5: Solve for x
    x = 11,130,800,614.58/120,600.66
  6. Step 6: Final answer
    x = 92,294.69

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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.