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Finding the Fourth Proportional to 143,894.48, 215,718.63 and 55,211.63

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Solution

The fourth proportional to 143,894.48, 215,718.63 and 55,211.63 is: 82,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,894.48 : 215,718.63 = 55,211.63 : x
  2. Step 2: Convert to fraction form
    143,894.48/215,718.63 = 55,211.63/x
  3. Step 3: Cross multiply
    143,894.48x = 215,718.63 × 55,211.63
  4. Step 4: Simplify right side
    143,894.48x = 11,910,175,898.03
  5. Step 5: Solve for x
    x = 11,910,175,898.03/143,894.48
  6. Step 6: Final answer
    x = 82,770.21

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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.