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Finding the Fourth Proportional to 161,770.20, 242,655.30 and 133,776.60

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Solution

The fourth proportional to 161,770.20, 242,655.30 and 133,776.60 is: 200,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,770.20 : 242,655.30 = 133,776.60 : x
  2. Step 2: Convert to fraction form
    161,770.20/242,655.30 = 133,776.60/x
  3. Step 3: Cross multiply
    161,770.20x = 242,655.30 × 133,776.60
  4. Step 4: Simplify right side
    161,770.20x = 32,461,601,005.98
  5. Step 5: Solve for x
    x = 32,461,601,005.98/161,770.20
  6. Step 6: Final answer
    x = 200,664.90

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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.