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Finding the Fourth Proportional to 187,290.95, 280,805.19 and 68,946.89

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Solution

The fourth proportional to 187,290.95, 280,805.19 and 68,946.89 is: 103,372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,290.95 : 280,805.19 = 68,946.89 : x
  2. Step 2: Convert to fraction form
    187,290.95/280,805.19 = 68,946.89/x
  3. Step 3: Cross multiply
    187,290.95x = 280,805.19 × 68,946.89
  4. Step 4: Simplify right side
    187,290.95x = 19,360,644,546.36
  5. Step 5: Solve for x
    x = 19,360,644,546.36/187,290.95
  6. Step 6: Final answer
    x = 103,372.02

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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.