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Finding the Fourth Proportional to 176,939.20, 265,408.80 and 66,131.20

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Solution

The fourth proportional to 176,939.20, 265,408.80 and 66,131.20 is: 99,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,939.20 : 265,408.80 = 66,131.20 : x
  2. Step 2: Convert to fraction form
    176,939.20/265,408.80 = 66,131.20/x
  3. Step 3: Cross multiply
    176,939.20x = 265,408.80 × 66,131.20
  4. Step 4: Simplify right side
    176,939.20x = 17,551,802,434.56
  5. Step 5: Solve for x
    x = 17,551,802,434.56/176,939.20
  6. Step 6: Final answer
    x = 99,196.80

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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.