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Finding the Fourth Proportional to 132,239, 182,489.82 and 72,623

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Solution

The fourth proportional to 132,239, 182,489.82 and 72,623 is: 100,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,239 : 182,489.82 = 72,623 : x
  2. Step 2: Convert to fraction form
    132,239/182,489.82 = 72,623/x
  3. Step 3: Cross multiply
    132,239x = 182,489.82 × 72,623
  4. Step 4: Simplify right side
    132,239x = 13,252,958,197.86
  5. Step 5: Solve for x
    x = 13,252,958,197.86/132,239
  6. Step 6: Final answer
    x = 100,219.74

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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.