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Finding the Fourth Proportional to 132,552, 182,921.76 and 72,936

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Solution

The fourth proportional to 132,552, 182,921.76 and 72,936 is: 100,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,552 : 182,921.76 = 72,936 : x
  2. Step 2: Convert to fraction form
    132,552/182,921.76 = 72,936/x
  3. Step 3: Cross multiply
    132,552x = 182,921.76 × 72,936
  4. Step 4: Simplify right side
    132,552x = 13,341,581,487.36
  5. Step 5: Solve for x
    x = 13,341,581,487.36/132,552
  6. Step 6: Final answer
    x = 100,651.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.