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Finding the Fourth Proportional to 161,857.70, 242,786.55 and 160,820.90

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Solution

The fourth proportional to 161,857.70, 242,786.55 and 160,820.90 is: 241,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,857.70 : 242,786.55 = 160,820.90 : x
  2. Step 2: Convert to fraction form
    161,857.70/242,786.55 = 160,820.90/x
  3. Step 3: Cross multiply
    161,857.70x = 242,786.55 × 160,820.90
  4. Step 4: Simplify right side
    161,857.70x = 39,045,151,478.90
  5. Step 5: Solve for x
    x = 39,045,151,478.90/161,857.70
  6. Step 6: Final answer
    x = 241,231.35

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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.