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Finding the Fourth Proportional to 172,787.18, 259,003.04 and 66,146.02

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Solution

The fourth proportional to 172,787.18, 259,003.04 and 66,146.02 is: 99,150.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,787.18 : 259,003.04 = 66,146.02 : x
  2. Step 2: Convert to fraction form
    172,787.18/259,003.04 = 66,146.02/x
  3. Step 3: Cross multiply
    172,787.18x = 259,003.04 × 66,146.02
  4. Step 4: Simplify right side
    172,787.18x = 17,132,019,285.66
  5. Step 5: Solve for x
    x = 17,132,019,285.66/172,787.18
  6. Step 6: Final answer
    x = 99,150.99

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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.