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Finding the Fourth Proportional to 161,704.59, 242,603.70 and 66,917.27

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Solution

The fourth proportional to 161,704.59, 242,603.70 and 66,917.27 is: 100,395.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,704.59 : 242,603.70 = 66,917.27 : x
  2. Step 2: Convert to fraction form
    161,704.59/242,603.70 = 66,917.27/x
  3. Step 3: Cross multiply
    161,704.59x = 242,603.70 × 66,917.27
  4. Step 4: Simplify right side
    161,704.59x = 16,234,376,082.88
  5. Step 5: Solve for x
    x = 16,234,376,082.88/161,704.59
  6. Step 6: Final answer
    x = 100,395.27

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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.