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Finding the Fourth Proportional to 187,416.97, 280,945.02 and 69,023.72

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Solution

The fourth proportional to 187,416.97, 280,945.02 and 69,023.72 is: 103,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,416.97 : 280,945.02 = 69,023.72 : x
  2. Step 2: Convert to fraction form
    187,416.97/280,945.02 = 69,023.72/x
  3. Step 3: Cross multiply
    187,416.97x = 280,945.02 × 69,023.72
  4. Step 4: Simplify right side
    187,416.97x = 19,391,870,395.87
  5. Step 5: Solve for x
    x = 19,391,870,395.87/187,416.97
  6. Step 6: Final answer
    x = 103,469.13

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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.