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Finding the Fourth Proportional to 161,181.80, 241,821.30 and 86,337.80

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Solution

The fourth proportional to 161,181.80, 241,821.30 and 86,337.80 is: 129,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,181.80 : 241,821.30 = 86,337.80 : x
  2. Step 2: Convert to fraction form
    161,181.80/241,821.30 = 86,337.80/x
  3. Step 3: Cross multiply
    161,181.80x = 241,821.30 × 86,337.80
  4. Step 4: Simplify right side
    161,181.80x = 20,878,319,035.14
  5. Step 5: Solve for x
    x = 20,878,319,035.14/161,181.80
  6. Step 6: Final answer
    x = 129,532.73

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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.