Home / 230,449.07-345,673.20-90,109.28

Finding the Fourth Proportional to 230,449.07, 345,673.20 and 90,109.28

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Solution

The fourth proportional to 230,449.07, 345,673.20 and 90,109.28 is: 135,163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,449.07 : 345,673.20 = 90,109.28 : x
  2. Step 2: Convert to fraction form
    230,449.07/345,673.20 = 90,109.28/x
  3. Step 3: Cross multiply
    230,449.07x = 345,673.20 × 90,109.28
  4. Step 4: Simplify right side
    230,449.07x = 31,148,363,167.30
  5. Step 5: Solve for x
    x = 31,148,363,167.30/230,449.07
  6. Step 6: Final answer
    x = 135,163.76

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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.