Home / 168,121.78-232,001.10-91,639.22

Finding the Fourth Proportional to 168,121.78, 232,001.10 and 91,639.22

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Solution

The fourth proportional to 168,121.78, 232,001.10 and 91,639.22 is: 126,458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,121.78 : 232,001.10 = 91,639.22 : x
  2. Step 2: Convert to fraction form
    168,121.78/232,001.10 = 91,639.22/x
  3. Step 3: Cross multiply
    168,121.78x = 232,001.10 × 91,639.22
  4. Step 4: Simplify right side
    168,121.78x = 21,260,398,683.14
  5. Step 5: Solve for x
    x = 21,260,398,683.14/168,121.78
  6. Step 6: Final answer
    x = 126,458.33

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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.