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Finding the Fourth Proportional to 177,586.40, 266,152.80 and 72,286.40

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Solution

The fourth proportional to 177,586.40, 266,152.80 and 72,286.40 is: 108,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,586.40 : 266,152.80 = 72,286.40 : x
  2. Step 2: Convert to fraction form
    177,586.40/266,152.80 = 72,286.40/x
  3. Step 3: Cross multiply
    177,586.40x = 266,152.80 × 72,286.40
  4. Step 4: Simplify right side
    177,586.40x = 19,239,227,761.92
  5. Step 5: Solve for x
    x = 19,239,227,761.92/177,586.40
  6. Step 6: Final answer
    x = 108,337.28

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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.