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Finding the Fourth Proportional to 177,858.24, 266,720.40 and 72,620.88

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Solution

The fourth proportional to 177,858.24, 266,720.40 and 72,620.88 is: 108,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,858.24 : 266,720.40 = 72,620.88 : x
  2. Step 2: Convert to fraction form
    177,858.24/266,720.40 = 72,620.88/x
  3. Step 3: Cross multiply
    177,858.24x = 266,720.40 × 72,620.88
  4. Step 4: Simplify right side
    177,858.24x = 19,369,470,161.95
  5. Step 5: Solve for x
    x = 19,369,470,161.95/177,858.24
  6. Step 6: Final answer
    x = 108,903.98

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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.