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Finding the Fourth Proportional to 187,396.96, 280,845.84 and 68,958.72

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Solution

The fourth proportional to 187,396.96, 280,845.84 and 68,958.72 is: 103,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,396.96 : 280,845.84 = 68,958.72 : x
  2. Step 2: Convert to fraction form
    187,396.96/280,845.84 = 68,958.72/x
  3. Step 3: Cross multiply
    187,396.96x = 280,845.84 × 68,958.72
  4. Step 4: Simplify right side
    187,396.96x = 19,366,769,643.72
  5. Step 5: Solve for x
    x = 19,366,769,643.72/187,396.96
  6. Step 6: Final answer
    x = 103,346.23

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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.