Home / 168,128.40-232,021.61-103,640.25

Finding the Fourth Proportional to 168,128.40, 232,021.61 and 103,640.25

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Solution

The fourth proportional to 168,128.40, 232,021.61 and 103,640.25 is: 143,026.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,128.40 : 232,021.61 = 103,640.25 : x
  2. Step 2: Convert to fraction form
    168,128.40/232,021.61 = 103,640.25/x
  3. Step 3: Cross multiply
    168,128.40x = 232,021.61 × 103,640.25
  4. Step 4: Simplify right side
    168,128.40x = 24,046,777,665.80
  5. Step 5: Solve for x
    x = 24,046,777,665.80/168,128.40
  6. Step 6: Final answer
    x = 143,026.27

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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.