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Finding the Fourth Proportional to 172,906.40, 259,359.60 and 102,749.60

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Solution

The fourth proportional to 172,906.40, 259,359.60 and 102,749.60 is: 154,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,906.40 : 259,359.60 = 102,749.60 : x
  2. Step 2: Convert to fraction form
    172,906.40/259,359.60 = 102,749.60/x
  3. Step 3: Cross multiply
    172,906.40x = 259,359.60 × 102,749.60
  4. Step 4: Simplify right side
    172,906.40x = 26,649,095,156.16
  5. Step 5: Solve for x
    x = 26,649,095,156.16/172,906.40
  6. Step 6: Final answer
    x = 154,124.40

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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.