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Finding the Fourth Proportional to 161,190.80, 241,834.80 and 86,346.80

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Solution

The fourth proportional to 161,190.80, 241,834.80 and 86,346.80 is: 129,546.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,190.80 : 241,834.80 = 86,346.80 : x
  2. Step 2: Convert to fraction form
    161,190.80/241,834.80 = 86,346.80/x
  3. Step 3: Cross multiply
    161,190.80x = 241,834.80 × 86,346.80
  4. Step 4: Simplify right side
    161,190.80x = 20,881,661,108.64
  5. Step 5: Solve for x
    x = 20,881,661,108.64/161,190.80
  6. Step 6: Final answer
    x = 129,546.23

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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.