Home / 186,660.56-279,679.16-131,157.20

Finding the Fourth Proportional to 186,660.56, 279,679.16 and 131,157.20

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Solution

The fourth proportional to 186,660.56, 279,679.16 and 131,157.20 is: 196,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,660.56 : 279,679.16 = 131,157.20 : x
  2. Step 2: Convert to fraction form
    186,660.56/279,679.16 = 131,157.20/x
  3. Step 3: Cross multiply
    186,660.56x = 279,679.16 × 131,157.20
  4. Step 4: Simplify right side
    186,660.56x = 36,681,935,523.95
  5. Step 5: Solve for x
    x = 36,681,935,523.95/186,660.56
  6. Step 6: Final answer
    x = 196,516.80

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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.