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Finding the Fourth Proportional to 186,958.89, 280,475.30 and 68,631.25

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Solution

The fourth proportional to 186,958.89, 280,475.30 and 68,631.25 is: 102,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,958.89 : 280,475.30 = 68,631.25 : x
  2. Step 2: Convert to fraction form
    186,958.89/280,475.30 = 68,631.25/x
  3. Step 3: Cross multiply
    186,958.89x = 280,475.30 × 68,631.25
  4. Step 4: Simplify right side
    186,958.89x = 19,249,370,433.13
  5. Step 5: Solve for x
    x = 19,249,370,433.13/186,958.89
  6. Step 6: Final answer
    x = 102,960.44

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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.