Home / 100,286.40-138,390.88-59,976.24

Finding the Fourth Proportional to 100,286.40, 138,390.88 and 59,976.24

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Solution

The fourth proportional to 100,286.40, 138,390.88 and 59,976.24 is: 82,764.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,286.40 : 138,390.88 = 59,976.24 : x
  2. Step 2: Convert to fraction form
    100,286.40/138,390.88 = 59,976.24/x
  3. Step 3: Cross multiply
    100,286.40x = 138,390.88 × 59,976.24
  4. Step 4: Simplify right side
    100,286.40x = 8,300,164,632.69
  5. Step 5: Solve for x
    x = 8,300,164,632.69/100,286.40
  6. Step 6: Final answer
    x = 82,764.61

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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.