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Finding the Fourth Proportional to 172,135.36, 237,480.60 and 126,920.80

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Solution

The fourth proportional to 172,135.36, 237,480.60 and 126,920.80 is: 175,101.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,135.36 : 237,480.60 = 126,920.80 : x
  2. Step 2: Convert to fraction form
    172,135.36/237,480.60 = 126,920.80/x
  3. Step 3: Cross multiply
    172,135.36x = 237,480.60 × 126,920.80
  4. Step 4: Simplify right side
    172,135.36x = 30,141,227,736.48
  5. Step 5: Solve for x
    x = 30,141,227,736.48/172,135.36
  6. Step 6: Final answer
    x = 175,101.90

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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.