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Finding the Fourth Proportional to 187,333.62, 280,869.01 and 68,989.79

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Solution

The fourth proportional to 187,333.62, 280,869.01 and 68,989.79 is: 103,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,333.62 : 280,869.01 = 68,989.79 : x
  2. Step 2: Convert to fraction form
    187,333.62/280,869.01 = 68,989.79/x
  3. Step 3: Cross multiply
    187,333.62x = 280,869.01 × 68,989.79
  4. Step 4: Simplify right side
    187,333.62x = 19,377,094,017.41
  5. Step 5: Solve for x
    x = 19,377,094,017.41/187,333.62
  6. Step 6: Final answer
    x = 103,436.29

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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.