Home / 190,711.68-263,268.72-130,380

Finding the Fourth Proportional to 190,711.68, 263,268.72 and 130,380

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Solution

The fourth proportional to 190,711.68, 263,268.72 and 130,380 is: 179,983.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,711.68 : 263,268.72 = 130,380 : x
  2. Step 2: Convert to fraction form
    190,711.68/263,268.72 = 130,380/x
  3. Step 3: Cross multiply
    190,711.68x = 263,268.72 × 130,380
  4. Step 4: Simplify right side
    190,711.68x = 34,324,975,713.60
  5. Step 5: Solve for x
    x = 34,324,975,713.60/190,711.68
  6. Step 6: Final answer
    x = 179,983.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.