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Finding the Fourth Proportional to 136,502.70, 204,754.05 and 77,453.70

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Solution

The fourth proportional to 136,502.70, 204,754.05 and 77,453.70 is: 116,180.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,502.70 : 204,754.05 = 77,453.70 : x
  2. Step 2: Convert to fraction form
    136,502.70/204,754.05 = 77,453.70/x
  3. Step 3: Cross multiply
    136,502.70x = 204,754.05 × 77,453.70
  4. Step 4: Simplify right side
    136,502.70x = 15,858,958,762.49
  5. Step 5: Solve for x
    x = 15,858,958,762.49/136,502.70
  6. Step 6: Final answer
    x = 116,180.55

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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.