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Finding the Fourth Proportional to 133,159.60, 183,761.25 and 72,729.15

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Solution

The fourth proportional to 133,159.60, 183,761.25 and 72,729.15 is: 100,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,159.60 : 183,761.25 = 72,729.15 : x
  2. Step 2: Convert to fraction form
    133,159.60/183,761.25 = 72,729.15/x
  3. Step 3: Cross multiply
    133,159.60x = 183,761.25 × 72,729.15
  4. Step 4: Simplify right side
    133,159.60x = 13,364,799,515.44
  5. Step 5: Solve for x
    x = 13,364,799,515.44/133,159.60
  6. Step 6: Final answer
    x = 100,366.77

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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.