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Finding the Fourth Proportional to 143,556.57, 215,310.74 and 43,692.57

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Solution

The fourth proportional to 143,556.57, 215,310.74 and 43,692.57 is: 65,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,556.57 : 215,310.74 = 43,692.57 : x
  2. Step 2: Convert to fraction form
    143,556.57/215,310.74 = 43,692.57/x
  3. Step 3: Cross multiply
    143,556.57x = 215,310.74 × 43,692.57
  4. Step 4: Simplify right side
    143,556.57x = 9,407,479,360.74
  5. Step 5: Solve for x
    x = 9,407,479,360.74/143,556.57
  6. Step 6: Final answer
    x = 65,531.51

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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.