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Finding the Fourth Proportional to 120,846.60, 166,764.69 and 66,398.67

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Solution

The fourth proportional to 120,846.60, 166,764.69 and 66,398.67 is: 91,628.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,846.60 : 166,764.69 = 66,398.67 : x
  2. Step 2: Convert to fraction form
    120,846.60/166,764.69 = 66,398.67/x
  3. Step 3: Cross multiply
    120,846.60x = 166,764.69 × 66,398.67
  4. Step 4: Simplify right side
    120,846.60x = 11,072,953,618.96
  5. Step 5: Solve for x
    x = 11,072,953,618.96/120,846.60
  6. Step 6: Final answer
    x = 91,628.18

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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.