Home / 109,869.35-151,622.90-62,121.67

Finding the Fourth Proportional to 109,869.35, 151,622.90 and 62,121.67

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Solution

The fourth proportional to 109,869.35, 151,622.90 and 62,121.67 is: 85,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,869.35 : 151,622.90 = 62,121.67 : x
  2. Step 2: Convert to fraction form
    109,869.35/151,622.90 = 62,121.67/x
  3. Step 3: Cross multiply
    109,869.35x = 151,622.90 × 62,121.67
  4. Step 4: Simplify right side
    109,869.35x = 9,419,067,758.24
  5. Step 5: Solve for x
    x = 9,419,067,758.24/109,869.35
  6. Step 6: Final answer
    x = 85,729.71

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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.