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Finding the Fourth Proportional to 177,898.70, 266,846.49 and 72,643.79

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Solution

The fourth proportional to 177,898.70, 266,846.49 and 72,643.79 is: 108,965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,898.70 : 266,846.49 = 72,643.79 : x
  2. Step 2: Convert to fraction form
    177,898.70/266,846.49 = 72,643.79/x
  3. Step 3: Cross multiply
    177,898.70x = 266,846.49 × 72,643.79
  4. Step 4: Simplify right side
    177,898.70x = 19,384,739,047.56
  5. Step 5: Solve for x
    x = 19,384,739,047.56/177,898.70
  6. Step 6: Final answer
    x = 108,965.04

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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.