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Finding the Fourth Proportional to 172,571.30, 238,101.90 and 100,968.92

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Solution

The fourth proportional to 172,571.30, 238,101.90 and 100,968.92 is: 139,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,571.30 : 238,101.90 = 100,968.92 : x
  2. Step 2: Convert to fraction form
    172,571.30/238,101.90 = 100,968.92/x
  3. Step 3: Cross multiply
    172,571.30x = 238,101.90 × 100,968.92
  4. Step 4: Simplify right side
    172,571.30x = 24,040,891,692.95
  5. Step 5: Solve for x
    x = 24,040,891,692.95/172,571.30
  6. Step 6: Final answer
    x = 139,309.91

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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.