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Finding the Fourth Proportional to 162,769.80, 243,960.30 and 67,999.80

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Solution

The fourth proportional to 162,769.80, 243,960.30 and 67,999.80 is: 101,918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,769.80 : 243,960.30 = 67,999.80 : x
  2. Step 2: Convert to fraction form
    162,769.80/243,960.30 = 67,999.80/x
  3. Step 3: Cross multiply
    162,769.80x = 243,960.30 × 67,999.80
  4. Step 4: Simplify right side
    162,769.80x = 16,589,251,607.94
  5. Step 5: Solve for x
    x = 16,589,251,607.94/162,769.80
  6. Step 6: Final answer
    x = 101,918.49

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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.