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Finding the Fourth Proportional to 161,801.62, 242,679.75 and 68,285.50

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Solution

The fourth proportional to 161,801.62, 242,679.75 and 68,285.50 is: 102,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,801.62 : 242,679.75 = 68,285.50 : x
  2. Step 2: Convert to fraction form
    161,801.62/242,679.75 = 68,285.50/x
  3. Step 3: Cross multiply
    161,801.62x = 242,679.75 × 68,285.50
  4. Step 4: Simplify right side
    161,801.62x = 16,571,508,068.63
  5. Step 5: Solve for x
    x = 16,571,508,068.63/161,801.62
  6. Step 6: Final answer
    x = 102,418.68

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1.5x scale

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.