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Finding the Fourth Proportional to 187,395.49, 280,968.67 and 103,195.30

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Solution

The fourth proportional to 187,395.49, 280,968.67 and 103,195.30 is: 154,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,395.49 : 280,968.67 = 103,195.30 : x
  2. Step 2: Convert to fraction form
    187,395.49/280,968.67 = 103,195.30/x
  3. Step 3: Cross multiply
    187,395.49x = 280,968.67 × 103,195.30
  4. Step 4: Simplify right side
    187,395.49x = 28,994,647,620.21
  5. Step 5: Solve for x
    x = 28,994,647,620.21/187,395.49
  6. Step 6: Final answer
    x = 154,724.36

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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.