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Finding the Fourth Proportional to 143,357.68, 215,150.28 and 76,846.96

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Solution

The fourth proportional to 143,357.68, 215,150.28 and 76,846.96 is: 115,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,357.68 : 215,150.28 = 76,846.96 : x
  2. Step 2: Convert to fraction form
    143,357.68/215,150.28 = 76,846.96/x
  3. Step 3: Cross multiply
    143,357.68x = 215,150.28 × 76,846.96
  4. Step 4: Simplify right side
    143,357.68x = 16,533,644,961.15
  5. Step 5: Solve for x
    x = 16,533,644,961.15/143,357.68
  6. Step 6: Final answer
    x = 115,331.42

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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.