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Finding the Fourth Proportional to 187,998, 259,460.28 and 108,510

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Solution

The fourth proportional to 187,998, 259,460.28 and 108,510 is: 149,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,998 : 259,460.28 = 108,510 : x
  2. Step 2: Convert to fraction form
    187,998/259,460.28 = 108,510/x
  3. Step 3: Cross multiply
    187,998x = 259,460.28 × 108,510
  4. Step 4: Simplify right side
    187,998x = 28,154,034,982.80
  5. Step 5: Solve for x
    x = 28,154,034,982.80/187,998
  6. Step 6: Final answer
    x = 149,757.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.