Home / 100,819.53-151,229.30-30,699.45

Finding the Fourth Proportional to 100,819.53, 151,229.30 and 30,699.45

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Solution

The fourth proportional to 100,819.53, 151,229.30 and 30,699.45 is: 46,049.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,819.53 : 151,229.30 = 30,699.45 : x
  2. Step 2: Convert to fraction form
    100,819.53/151,229.30 = 30,699.45/x
  3. Step 3: Cross multiply
    100,819.53x = 151,229.30 × 30,699.45
  4. Step 4: Simplify right side
    100,819.53x = 4,642,656,180.39
  5. Step 5: Solve for x
    x = 4,642,656,180.39/100,819.53
  6. Step 6: Final answer
    x = 46,049.18

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1.5x scale

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.