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Finding the Fourth Proportional to 136,082.84, 203,687.51 and 72,744.57

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Solution

The fourth proportional to 136,082.84, 203,687.51 and 72,744.57 is: 108,883.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,082.84 : 203,687.51 = 72,744.57 : x
  2. Step 2: Convert to fraction form
    136,082.84/203,687.51 = 72,744.57/x
  3. Step 3: Cross multiply
    136,082.84x = 203,687.51 × 72,744.57
  4. Step 4: Simplify right side
    136,082.84x = 14,817,159,965.60
  5. Step 5: Solve for x
    x = 14,817,159,965.60/136,082.84
  6. Step 6: Final answer
    x = 108,883.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.