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Finding the Fourth Proportional to 177,604.60, 266,439.30 and 72,434.20

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Solution

The fourth proportional to 177,604.60, 266,439.30 and 72,434.20 is: 108,664.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,604.60 : 266,439.30 = 72,434.20 : x
  2. Step 2: Convert to fraction form
    177,604.60/266,439.30 = 72,434.20/x
  3. Step 3: Cross multiply
    177,604.60x = 266,439.30 × 72,434.20
  4. Step 4: Simplify right side
    177,604.60x = 19,299,317,544.06
  5. Step 5: Solve for x
    x = 19,299,317,544.06/177,604.60
  6. Step 6: Final answer
    x = 108,664.51

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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.