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Finding the Fourth Proportional to 177,605.78, 266,408.67 and 72,432.98

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Solution

The fourth proportional to 177,605.78, 266,408.67 and 72,432.98 is: 108,649.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,605.78 : 266,408.67 = 72,432.98 : x
  2. Step 2: Convert to fraction form
    177,605.78/266,408.67 = 72,432.98/x
  3. Step 3: Cross multiply
    177,605.78x = 266,408.67 × 72,432.98
  4. Step 4: Simplify right side
    177,605.78x = 19,296,773,865.94
  5. Step 5: Solve for x
    x = 19,296,773,865.94/177,605.78
  6. Step 6: Final answer
    x = 108,649.47

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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.