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Finding the Fourth Proportional to 172,773.05, 258,982.02 and 66,132

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Solution

The fourth proportional to 172,773.05, 258,982.02 and 66,132 is: 99,130.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,773.05 : 258,982.02 = 66,132 : x
  2. Step 2: Convert to fraction form
    172,773.05/258,982.02 = 66,132/x
  3. Step 3: Cross multiply
    172,773.05x = 258,982.02 × 66,132
  4. Step 4: Simplify right side
    172,773.05x = 17,126,998,946.64
  5. Step 5: Solve for x
    x = 17,126,998,946.64/172,773.05
  6. Step 6: Final answer
    x = 99,130.04

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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.