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Finding the Fourth Proportional to 161,753.80, 242,630.70 and 149,312.20

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Solution

The fourth proportional to 161,753.80, 242,630.70 and 149,312.20 is: 223,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,753.80 : 242,630.70 = 149,312.20 : x
  2. Step 2: Convert to fraction form
    161,753.80/242,630.70 = 149,312.20/x
  3. Step 3: Cross multiply
    161,753.80x = 242,630.70 × 149,312.20
  4. Step 4: Simplify right side
    161,753.80x = 36,227,723,604.54
  5. Step 5: Solve for x
    x = 36,227,723,604.54/161,753.80
  6. Step 6: Final answer
    x = 223,968.30

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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.