Home / 133,220.34-183,841.92-72,789.66

Finding the Fourth Proportional to 133,220.34, 183,841.92 and 72,789.66

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Solution

The fourth proportional to 133,220.34, 183,841.92 and 72,789.66 is: 100,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,220.34 : 183,841.92 = 72,789.66 : x
  2. Step 2: Convert to fraction form
    133,220.34/183,841.92 = 72,789.66/x
  3. Step 3: Cross multiply
    133,220.34x = 183,841.92 × 72,789.66
  4. Step 4: Simplify right side
    133,220.34x = 13,381,790,850.55
  5. Step 5: Solve for x
    x = 13,381,790,850.55/133,220.34
  6. Step 6: Final answer
    x = 100,448.56

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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.