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Finding the Fourth Proportional to 177,619.80, 266,429.70 and 136,147.80

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Solution

The fourth proportional to 177,619.80, 266,429.70 and 136,147.80 is: 204,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,619.80 : 266,429.70 = 136,147.80 : x
  2. Step 2: Convert to fraction form
    177,619.80/266,429.70 = 136,147.80/x
  3. Step 3: Cross multiply
    177,619.80x = 266,429.70 × 136,147.80
  4. Step 4: Simplify right side
    177,619.80x = 36,273,817,509.66
  5. Step 5: Solve for x
    x = 36,273,817,509.66/177,619.80
  6. Step 6: Final answer
    x = 204,221.70

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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.