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Finding the Fourth Proportional to 172,728.40, 259,092.60 and 102,571.60

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Solution

The fourth proportional to 172,728.40, 259,092.60 and 102,571.60 is: 153,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,728.40 : 259,092.60 = 102,571.60 : x
  2. Step 2: Convert to fraction form
    172,728.40/259,092.60 = 102,571.60/x
  3. Step 3: Cross multiply
    172,728.40x = 259,092.60 × 102,571.60
  4. Step 4: Simplify right side
    172,728.40x = 26,575,542,530.16
  5. Step 5: Solve for x
    x = 26,575,542,530.16/172,728.40
  6. Step 6: Final answer
    x = 153,857.40

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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.