Home / 131,810.40-197,715.60-108,190.80

Finding the Fourth Proportional to 131,810.40, 197,715.60 and 108,190.80

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Solution

The fourth proportional to 131,810.40, 197,715.60 and 108,190.80 is: 162,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,810.40 : 197,715.60 = 108,190.80 : x
  2. Step 2: Convert to fraction form
    131,810.40/197,715.60 = 108,190.80/x
  3. Step 3: Cross multiply
    131,810.40x = 197,715.60 × 108,190.80
  4. Step 4: Simplify right side
    131,810.40x = 21,391,008,936.48
  5. Step 5: Solve for x
    x = 21,391,008,936.48/131,810.40
  6. Step 6: Final answer
    x = 162,286.20

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1.5x scale

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.