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Finding the Fourth Proportional to 187,979.83, 281,797.06 and 81,297.06

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Solution

The fourth proportional to 187,979.83, 281,797.06 and 81,297.06 is: 121,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,979.83 : 281,797.06 = 81,297.06 : x
  2. Step 2: Convert to fraction form
    187,979.83/281,797.06 = 81,297.06/x
  3. Step 3: Cross multiply
    187,979.83x = 281,797.06 × 81,297.06
  4. Step 4: Simplify right side
    187,979.83x = 22,909,270,679.17
  5. Step 5: Solve for x
    x = 22,909,270,679.17/187,979.83
  6. Step 6: Final answer
    x = 121,870.90

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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.