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Finding the Fourth Proportional to 120,626.64, 166,464.15 and 66,911.10

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Solution

The fourth proportional to 120,626.64, 166,464.15 and 66,911.10 is: 92,336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,626.64 : 166,464.15 = 66,911.10 : x
  2. Step 2: Convert to fraction form
    120,626.64/166,464.15 = 66,911.10/x
  3. Step 3: Cross multiply
    120,626.64x = 166,464.15 × 66,911.10
  4. Step 4: Simplify right side
    120,626.64x = 11,138,299,387.07
  5. Step 5: Solve for x
    x = 11,138,299,387.07/120,626.64
  6. Step 6: Final answer
    x = 92,336.98

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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.