Home / 172,728.77-238,366.18-100,145.73

Finding the Fourth Proportional to 172,728.77, 238,366.18 and 100,145.73

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Solution

The fourth proportional to 172,728.77, 238,366.18 and 100,145.73 is: 138,201.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,728.77 : 238,366.18 = 100,145.73 : x
  2. Step 2: Convert to fraction form
    172,728.77/238,366.18 = 100,145.73/x
  3. Step 3: Cross multiply
    172,728.77x = 238,366.18 × 100,145.73
  4. Step 4: Simplify right side
    172,728.77x = 23,871,354,853.05
  5. Step 5: Solve for x
    x = 23,871,354,853.05/172,728.77
  6. Step 6: Final answer
    x = 138,201.39

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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.