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Finding the Fourth Proportional to 187,718.90, 281,578.16 and 75,399.14

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Solution

The fourth proportional to 187,718.90, 281,578.16 and 75,399.14 is: 113,098.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,718.90 : 281,578.16 = 75,399.14 : x
  2. Step 2: Convert to fraction form
    187,718.90/281,578.16 = 75,399.14/x
  3. Step 3: Cross multiply
    187,718.90x = 281,578.16 × 75,399.14
  4. Step 4: Simplify right side
    187,718.90x = 21,230,751,497.23
  5. Step 5: Solve for x
    x = 21,230,751,497.23/187,718.90
  6. Step 6: Final answer
    x = 113,098.63

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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.