Home / 168,021.77-231,869.33-91,540.63

Finding the Fourth Proportional to 168,021.77, 231,869.33 and 91,540.63

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Solution

The fourth proportional to 168,021.77, 231,869.33 and 91,540.63 is: 126,325.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,021.77 : 231,869.33 = 91,540.63 : x
  2. Step 2: Convert to fraction form
    168,021.77/231,869.33 = 91,540.63/x
  3. Step 3: Cross multiply
    168,021.77x = 231,869.33 × 91,540.63
  4. Step 4: Simplify right side
    168,021.77x = 21,225,463,386.53
  5. Step 5: Solve for x
    x = 21,225,463,386.53/168,021.77
  6. Step 6: Final answer
    x = 126,325.68

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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.