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Finding the Fourth Proportional to 140,682.86, 211,026.54 and 45,912.68

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Solution

The fourth proportional to 140,682.86, 211,026.54 and 45,912.68 is: 68,869.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,682.86 : 211,026.54 = 45,912.68 : x
  2. Step 2: Convert to fraction form
    140,682.86/211,026.54 = 45,912.68/x
  3. Step 3: Cross multiply
    140,682.86x = 211,026.54 × 45,912.68
  4. Step 4: Simplify right side
    140,682.86x = 9,688,794,002.53
  5. Step 5: Solve for x
    x = 9,688,794,002.53/140,682.86
  6. Step 6: Final answer
    x = 68,869.75

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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.