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Finding the Fourth Proportional to 133,264.87, 183,909.76 and 72,834.21

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Solution

The fourth proportional to 133,264.87, 183,909.76 and 72,834.21 is: 100,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,264.87 : 183,909.76 = 72,834.21 : x
  2. Step 2: Convert to fraction form
    133,264.87/183,909.76 = 72,834.21/x
  3. Step 3: Cross multiply
    133,264.87x = 183,909.76 × 72,834.21
  4. Step 4: Simplify right side
    133,264.87x = 13,394,922,712.28
  5. Step 5: Solve for x
    x = 13,394,922,712.28/133,264.87
  6. Step 6: Final answer
    x = 100,513.53

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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.