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Finding the Fourth Proportional to 132,545, 182,912.10 and 72,929

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Solution

The fourth proportional to 132,545, 182,912.10 and 72,929 is: 100,642.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,545 : 182,912.10 = 72,929 : x
  2. Step 2: Convert to fraction form
    132,545/182,912.10 = 72,929/x
  3. Step 3: Cross multiply
    132,545x = 182,912.10 × 72,929
  4. Step 4: Simplify right side
    132,545x = 13,339,596,540.90
  5. Step 5: Solve for x
    x = 13,339,596,540.90/132,545
  6. Step 6: Final answer
    x = 100,642.02

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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.