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Finding the Fourth Proportional to 172,712.40, 259,075 and 60,370.64

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Solution

The fourth proportional to 172,712.40, 259,075 and 60,370.64 is: 90,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,712.40 : 259,075 = 60,370.64 : x
  2. Step 2: Convert to fraction form
    172,712.40/259,075 = 60,370.64/x
  3. Step 3: Cross multiply
    172,712.40x = 259,075 × 60,370.64
  4. Step 4: Simplify right side
    172,712.40x = 15,640,523,558
  5. Step 5: Solve for x
    x = 15,640,523,558/172,712.40
  6. Step 6: Final answer
    x = 90,558.20

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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.