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Finding the Fourth Proportional to 133,086.92, 183,652.10 and 72,645.56

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Solution

The fourth proportional to 133,086.92, 183,652.10 and 72,645.56 is: 100,246.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,086.92 : 183,652.10 = 72,645.56 : x
  2. Step 2: Convert to fraction form
    133,086.92/183,652.10 = 72,645.56/x
  3. Step 3: Cross multiply
    133,086.92x = 183,652.10 × 72,645.56
  4. Step 4: Simplify right side
    133,086.92x = 13,341,509,649.68
  5. Step 5: Solve for x
    x = 13,341,509,649.68/133,086.92
  6. Step 6: Final answer
    x = 100,246.59

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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.