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Finding the Fourth Proportional to 133,100.80, 183,679.74 and 72,672.68

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Solution

The fourth proportional to 133,100.80, 183,679.74 and 72,672.68 is: 100,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,100.80 : 183,679.74 = 72,672.68 : x
  2. Step 2: Convert to fraction form
    133,100.80/183,679.74 = 72,672.68/x
  3. Step 3: Cross multiply
    133,100.80x = 183,679.74 × 72,672.68
  4. Step 4: Simplify right side
    133,100.80x = 13,348,498,967.50
  5. Step 5: Solve for x
    x = 13,348,498,967.50/133,100.80
  6. Step 6: Final answer
    x = 100,288.65

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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.