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Finding the Fourth Proportional to 172,907.40, 259,361.10 and 102,750.60

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Solution

The fourth proportional to 172,907.40, 259,361.10 and 102,750.60 is: 154,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,907.40 : 259,361.10 = 102,750.60 : x
  2. Step 2: Convert to fraction form
    172,907.40/259,361.10 = 102,750.60/x
  3. Step 3: Cross multiply
    172,907.40x = 259,361.10 × 102,750.60
  4. Step 4: Simplify right side
    172,907.40x = 26,649,508,641.66
  5. Step 5: Solve for x
    x = 26,649,508,641.66/172,907.40
  6. Step 6: Final answer
    x = 154,125.90

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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.