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Finding the Fourth Proportional to 187,348.20, 280,925.10 and 68,958.60

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Solution

The fourth proportional to 187,348.20, 280,925.10 and 68,958.60 is: 103,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,348.20 : 280,925.10 = 68,958.60 : x
  2. Step 2: Convert to fraction form
    187,348.20/280,925.10 = 68,958.60/x
  3. Step 3: Cross multiply
    187,348.20x = 280,925.10 × 68,958.60
  4. Step 4: Simplify right side
    187,348.20x = 19,372,201,600.86
  5. Step 5: Solve for x
    x = 19,372,201,600.86/187,348.20
  6. Step 6: Final answer
    x = 103,402.12

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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.