Home / 133,286.70-183,940.56-72,861.38

Finding the Fourth Proportional to 133,286.70, 183,940.56 and 72,861.38

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Solution

The fourth proportional to 133,286.70, 183,940.56 and 72,861.38 is: 100,551.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,286.70 : 183,940.56 = 72,861.38 : x
  2. Step 2: Convert to fraction form
    133,286.70/183,940.56 = 72,861.38/x
  3. Step 3: Cross multiply
    133,286.70x = 183,940.56 × 72,861.38
  4. Step 4: Simplify right side
    133,286.70x = 13,402,163,039.57
  5. Step 5: Solve for x
    x = 13,402,163,039.57/133,286.70
  6. Step 6: Final answer
    x = 100,551.39

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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.