Home / 130,659.72-195,926.20-76,639.16

Finding the Fourth Proportional to 130,659.72, 195,926.20 and 76,639.16

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Solution

The fourth proportional to 130,659.72, 195,926.20 and 76,639.16 is: 114,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,659.72 : 195,926.20 = 76,639.16 : x
  2. Step 2: Convert to fraction form
    130,659.72/195,926.20 = 76,639.16/x
  3. Step 3: Cross multiply
    130,659.72x = 195,926.20 × 76,639.16
  4. Step 4: Simplify right side
    130,659.72x = 15,015,619,389.99
  5. Step 5: Solve for x
    x = 15,015,619,389.99/130,659.72
  6. Step 6: Final answer
    x = 114,921.56

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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.