Home / 131,170.40-196,459.56-91,902.80

Finding the Fourth Proportional to 131,170.40, 196,459.56 and 91,902.80

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Solution

The fourth proportional to 131,170.40, 196,459.56 and 91,902.80 is: 137,646.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,170.40 : 196,459.56 = 91,902.80 : x
  2. Step 2: Convert to fraction form
    131,170.40/196,459.56 = 91,902.80/x
  3. Step 3: Cross multiply
    131,170.40x = 196,459.56 × 91,902.80
  4. Step 4: Simplify right side
    131,170.40x = 18,055,183,650.77
  5. Step 5: Solve for x
    x = 18,055,183,650.77/131,170.40
  6. Step 6: Final answer
    x = 137,646.78

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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.