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Finding the Fourth Proportional to 172,571.46, 238,082.44 and 107,129.59

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Solution

The fourth proportional to 172,571.46, 238,082.44 and 107,129.59 is: 147,797.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,571.46 : 238,082.44 = 107,129.59 : x
  2. Step 2: Convert to fraction form
    172,571.46/238,082.44 = 107,129.59/x
  3. Step 3: Cross multiply
    172,571.46x = 238,082.44 × 107,129.59
  4. Step 4: Simplify right side
    172,571.46x = 25,505,673,521.24
  5. Step 5: Solve for x
    x = 25,505,673,521.24/172,571.46
  6. Step 6: Final answer
    x = 147,797.75

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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.