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Finding the Fourth Proportional to 187,387.20, 280,983.60 and 68,997.60

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Solution

The fourth proportional to 187,387.20, 280,983.60 and 68,997.60 is: 103,460.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,387.20 : 280,983.60 = 68,997.60 : x
  2. Step 2: Convert to fraction form
    187,387.20/280,983.60 = 68,997.60/x
  3. Step 3: Cross multiply
    187,387.20x = 280,983.60 × 68,997.60
  4. Step 4: Simplify right side
    187,387.20x = 19,387,194,039.36
  5. Step 5: Solve for x
    x = 19,387,194,039.36/187,387.20
  6. Step 6: Final answer
    x = 103,460.61

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1.5x scale

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.