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Finding the Fourth Proportional to 177,620.40, 266,203.80 and 72,320.40

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Solution

The fourth proportional to 177,620.40, 266,203.80 and 72,320.40 is: 108,388.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,620.40 : 266,203.80 = 72,320.40 : x
  2. Step 2: Convert to fraction form
    177,620.40/266,203.80 = 72,320.40/x
  3. Step 3: Cross multiply
    177,620.40x = 266,203.80 × 72,320.40
  4. Step 4: Simplify right side
    177,620.40x = 19,251,965,297.52
  5. Step 5: Solve for x
    x = 19,251,965,297.52/177,620.40
  6. Step 6: Final answer
    x = 108,388.26

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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.