Home / 120,631.14-166,471.72-66,919.56

Finding the Fourth Proportional to 120,631.14, 166,471.72 and 66,919.56

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Solution

The fourth proportional to 120,631.14, 166,471.72 and 66,919.56 is: 92,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.14 : 166,471.72 = 66,919.56 : x
  2. Step 2: Convert to fraction form
    120,631.14/166,471.72 = 66,919.56/x
  3. Step 3: Cross multiply
    120,631.14x = 166,471.72 × 66,919.56
  4. Step 4: Simplify right side
    120,631.14x = 11,140,213,422.48
  5. Step 5: Solve for x
    x = 11,140,213,422.48/120,631.14
  6. Step 6: Final answer
    x = 92,349.40

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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.