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Finding the Fourth Proportional to 187,706.96, 281,355.64 and 69,278.48

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Solution

The fourth proportional to 187,706.96, 281,355.64 and 69,278.48 is: 103,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,706.96 : 281,355.64 = 69,278.48 : x
  2. Step 2: Convert to fraction form
    187,706.96/281,355.64 = 69,278.48/x
  3. Step 3: Cross multiply
    187,706.96x = 281,355.64 × 69,278.48
  4. Step 4: Simplify right side
    187,706.96x = 19,491,891,078.63
  5. Step 5: Solve for x
    x = 19,491,891,078.63/187,706.96
  6. Step 6: Final answer
    x = 103,842.13

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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.