Home / 168,090.40-231,645.48-120,260.80

Finding the Fourth Proportional to 168,090.40, 231,645.48 and 120,260.80

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Solution

The fourth proportional to 168,090.40, 231,645.48 and 120,260.80 is: 165,731.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,090.40 : 231,645.48 = 120,260.80 : x
  2. Step 2: Convert to fraction form
    168,090.40/231,645.48 = 120,260.80/x
  3. Step 3: Cross multiply
    168,090.40x = 231,645.48 × 120,260.80
  4. Step 4: Simplify right side
    168,090.40x = 27,857,870,741.18
  5. Step 5: Solve for x
    x = 27,857,870,741.18/168,090.40
  6. Step 6: Final answer
    x = 165,731.48

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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.