Home / 143,122.86-197,500.41-79,460.64

Finding the Fourth Proportional to 143,122.86, 197,500.41 and 79,460.64

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Solution

The fourth proportional to 143,122.86, 197,500.41 and 79,460.64 is: 109,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,122.86 : 197,500.41 = 79,460.64 : x
  2. Step 2: Convert to fraction form
    143,122.86/197,500.41 = 79,460.64/x
  3. Step 3: Cross multiply
    143,122.86x = 197,500.41 × 79,460.64
  4. Step 4: Simplify right side
    143,122.86x = 15,693,508,978.86
  5. Step 5: Solve for x
    x = 15,693,508,978.86/143,122.86
  6. Step 6: Final answer
    x = 109,650.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.