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Finding the Fourth Proportional to 187,310.40, 280,625.40 and 108,189.60

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Solution

The fourth proportional to 187,310.40, 280,625.40 and 108,189.60 is: 162,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,310.40 : 280,625.40 = 108,189.60 : x
  2. Step 2: Convert to fraction form
    187,310.40/280,625.40 = 108,189.60/x
  3. Step 3: Cross multiply
    187,310.40x = 280,625.40 × 108,189.60
  4. Step 4: Simplify right side
    187,310.40x = 30,360,749,775.84
  5. Step 5: Solve for x
    x = 30,360,749,775.84/187,310.40
  6. Step 6: Final answer
    x = 162,087.90

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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.