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Finding the Fourth Proportional to 126,959.94, 190,401.57 and 38,189.88

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Solution

The fourth proportional to 126,959.94, 190,401.57 and 38,189.88 is: 57,273.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,959.94 : 190,401.57 = 38,189.88 : x
  2. Step 2: Convert to fraction form
    126,959.94/190,401.57 = 38,189.88/x
  3. Step 3: Cross multiply
    126,959.94x = 190,401.57 × 38,189.88
  4. Step 4: Simplify right side
    126,959.94x = 7,271,413,110.11
  5. Step 5: Solve for x
    x = 7,271,413,110.11/126,959.94
  6. Step 6: Final answer
    x = 57,273.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.