Home / 168,090.83-231,971.23-91,616.30

Finding the Fourth Proportional to 168,090.83, 231,971.23 and 91,616.30

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Solution

The fourth proportional to 168,090.83, 231,971.23 and 91,616.30 is: 126,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,090.83 : 231,971.23 = 91,616.30 : x
  2. Step 2: Convert to fraction form
    168,090.83/231,971.23 = 91,616.30/x
  3. Step 3: Cross multiply
    168,090.83x = 231,971.23 × 91,616.30
  4. Step 4: Simplify right side
    168,090.83x = 21,252,345,623.61
  5. Step 5: Solve for x
    x = 21,252,345,623.61/168,090.83
  6. Step 6: Final answer
    x = 126,433.70

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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.