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Finding the Fourth Proportional to 120,609.99, 166,440.69 and 66,895.11

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Solution

The fourth proportional to 120,609.99, 166,440.69 and 66,895.11 is: 92,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,609.99 : 166,440.69 = 66,895.11 : x
  2. Step 2: Convert to fraction form
    120,609.99/166,440.69 = 66,895.11/x
  3. Step 3: Cross multiply
    120,609.99x = 166,440.69 × 66,895.11
  4. Step 4: Simplify right side
    120,609.99x = 11,134,068,266.03
  5. Step 5: Solve for x
    x = 11,134,068,266.03/120,609.99
  6. Step 6: Final answer
    x = 92,314.64

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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.