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Finding the Fourth Proportional to 133,137.60, 183,723.03 and 72,696.60

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Solution

The fourth proportional to 133,137.60, 183,723.03 and 72,696.60 is: 100,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,137.60 : 183,723.03 = 72,696.60 : x
  2. Step 2: Convert to fraction form
    133,137.60/183,723.03 = 72,696.60/x
  3. Step 3: Cross multiply
    133,137.60x = 183,723.03 × 72,696.60
  4. Step 4: Simplify right side
    133,137.60x = 13,356,039,622.70
  5. Step 5: Solve for x
    x = 13,356,039,622.70/133,137.60
  6. Step 6: Final answer
    x = 100,317.56

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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.