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Finding the Fourth Proportional to 143,711.80, 215,600.10 and 43,876.60

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Solution

The fourth proportional to 143,711.80, 215,600.10 and 43,876.60 is: 65,824.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,711.80 : 215,600.10 = 43,876.60 : x
  2. Step 2: Convert to fraction form
    143,711.80/215,600.10 = 43,876.60/x
  3. Step 3: Cross multiply
    143,711.80x = 215,600.10 × 43,876.60
  4. Step 4: Simplify right side
    143,711.80x = 9,459,799,347.66
  5. Step 5: Solve for x
    x = 9,459,799,347.66/143,711.80
  6. Step 6: Final answer
    x = 65,824.79

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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.