Home / 113,049.42-155,976.21-72,786.48

Finding the Fourth Proportional to 113,049.42, 155,976.21 and 72,786.48

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Solution

The fourth proportional to 113,049.42, 155,976.21 and 72,786.48 is: 100,424.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,049.42 : 155,976.21 = 72,786.48 : x
  2. Step 2: Convert to fraction form
    113,049.42/155,976.21 = 72,786.48/x
  3. Step 3: Cross multiply
    113,049.42x = 155,976.21 × 72,786.48
  4. Step 4: Simplify right side
    113,049.42x = 11,352,959,289.64
  5. Step 5: Solve for x
    x = 11,352,959,289.64/113,049.42
  6. Step 6: Final answer
    x = 100,424.75

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1.5x scale

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.