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Finding the Fourth Proportional to 161,702.20, 242,466.90 and 68,102.20

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Solution

The fourth proportional to 161,702.20, 242,466.90 and 68,102.20 is: 102,116.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,702.20 : 242,466.90 = 68,102.20 : x
  2. Step 2: Convert to fraction form
    161,702.20/242,466.90 = 68,102.20/x
  3. Step 3: Cross multiply
    161,702.20x = 242,466.90 × 68,102.20
  4. Step 4: Simplify right side
    161,702.20x = 16,512,529,317.18
  5. Step 5: Solve for x
    x = 16,512,529,317.18/161,702.20
  6. Step 6: Final answer
    x = 102,116.91

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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.