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Finding the Fourth Proportional to 133,169.90, 183,773.22 and 72,740.52

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Solution

The fourth proportional to 133,169.90, 183,773.22 and 72,740.52 is: 100,381.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,169.90 : 183,773.22 = 72,740.52 : x
  2. Step 2: Convert to fraction form
    133,169.90/183,773.22 = 72,740.52/x
  3. Step 3: Cross multiply
    133,169.90x = 183,773.22 × 72,740.52
  4. Step 4: Simplify right side
    133,169.90x = 13,367,759,584.87
  5. Step 5: Solve for x
    x = 13,367,759,584.87/133,169.90
  6. Step 6: Final answer
    x = 100,381.24

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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.