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Finding the Fourth Proportional to 143,693.58, 215,540.37 and 43,854.28

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Solution

The fourth proportional to 143,693.58, 215,540.37 and 43,854.28 is: 65,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,693.58 : 215,540.37 = 43,854.28 : x
  2. Step 2: Convert to fraction form
    143,693.58/215,540.37 = 43,854.28/x
  3. Step 3: Cross multiply
    143,693.58x = 215,540.37 × 43,854.28
  4. Step 4: Simplify right side
    143,693.58x = 9,452,367,737.28
  5. Step 5: Solve for x
    x = 9,452,367,737.28/143,693.58
  6. Step 6: Final answer
    x = 65,781.42

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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.