Home / 100,819.40-151,229.10-30,698.60

Finding the Fourth Proportional to 100,819.40, 151,229.10 and 30,698.60

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Solution

The fourth proportional to 100,819.40, 151,229.10 and 30,698.60 is: 46,047.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,819.40 : 151,229.10 = 30,698.60 : x
  2. Step 2: Convert to fraction form
    100,819.40/151,229.10 = 30,698.60/x
  3. Step 3: Cross multiply
    100,819.40x = 151,229.10 × 30,698.60
  4. Step 4: Simplify right side
    100,819.40x = 4,642,521,649.26
  5. Step 5: Solve for x
    x = 4,642,521,649.26/100,819.40
  6. Step 6: Final answer
    x = 46,047.90

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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.