Home / 100,984.32-151,515.36-38,640.24

Finding the Fourth Proportional to 100,984.32, 151,515.36 and 38,640.24

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Solution

The fourth proportional to 100,984.32, 151,515.36 and 38,640.24 is: 57,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,984.32 : 151,515.36 = 38,640.24 : x
  2. Step 2: Convert to fraction form
    100,984.32/151,515.36 = 38,640.24/x
  3. Step 3: Cross multiply
    100,984.32x = 151,515.36 × 38,640.24
  4. Step 4: Simplify right side
    100,984.32x = 5,854,589,874.09
  5. Step 5: Solve for x
    x = 5,854,589,874.09/100,984.32
  6. Step 6: Final answer
    x = 57,975.24

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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.