Home / 168,021.51-231,868.98-91,540.38

Finding the Fourth Proportional to 168,021.51, 231,868.98 and 91,540.38

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Solution

The fourth proportional to 168,021.51, 231,868.98 and 91,540.38 is: 126,325.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,021.51 : 231,868.98 = 91,540.38 : x
  2. Step 2: Convert to fraction form
    168,021.51/231,868.98 = 91,540.38/x
  3. Step 3: Cross multiply
    168,021.51x = 231,868.98 × 91,540.38
  4. Step 4: Simplify right side
    168,021.51x = 21,225,374,539.41
  5. Step 5: Solve for x
    x = 21,225,374,539.41/168,021.51
  6. Step 6: Final answer
    x = 126,325.34

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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.