Home / 120,835.32-166,749.30-67,119

Finding the Fourth Proportional to 120,835.32, 166,749.30 and 67,119

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Solution

The fourth proportional to 120,835.32, 166,749.30 and 67,119 is: 92,622.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,835.32 : 166,749.30 = 67,119 : x
  2. Step 2: Convert to fraction form
    120,835.32/166,749.30 = 67,119/x
  3. Step 3: Cross multiply
    120,835.32x = 166,749.30 × 67,119
  4. Step 4: Simplify right side
    120,835.32x = 11,192,046,266.70
  5. Step 5: Solve for x
    x = 11,192,046,266.70/120,835.32
  6. Step 6: Final answer
    x = 92,622.31

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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.