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Finding the Fourth Proportional to 172,361.16, 258,539.82 and 67,253.96

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Solution

The fourth proportional to 172,361.16, 258,539.82 and 67,253.96 is: 100,880.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,361.16 : 258,539.82 = 67,253.96 : x
  2. Step 2: Convert to fraction form
    172,361.16/258,539.82 = 67,253.96/x
  3. Step 3: Cross multiply
    172,361.16x = 258,539.82 × 67,253.96
  4. Step 4: Simplify right side
    172,361.16x = 17,387,826,712.69
  5. Step 5: Solve for x
    x = 17,387,826,712.69/172,361.16
  6. Step 6: Final answer
    x = 100,880.19

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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.