Home / 131,806.20-197,709.30-38,321.40

Finding the Fourth Proportional to 131,806.20, 197,709.30 and 38,321.40

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Solution

The fourth proportional to 131,806.20, 197,709.30 and 38,321.40 is: 57,482.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,806.20 : 197,709.30 = 38,321.40 : x
  2. Step 2: Convert to fraction form
    131,806.20/197,709.30 = 38,321.40/x
  3. Step 3: Cross multiply
    131,806.20x = 197,709.30 × 38,321.40
  4. Step 4: Simplify right side
    131,806.20x = 7,576,497,169.02
  5. Step 5: Solve for x
    x = 7,576,497,169.02/131,806.20
  6. Step 6: Final answer
    x = 57,482.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.