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Finding the Fourth Proportional to 132,236, 182,485.68 and 72,620

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Solution

The fourth proportional to 132,236, 182,485.68 and 72,620 is: 100,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,236 : 182,485.68 = 72,620 : x
  2. Step 2: Convert to fraction form
    132,236/182,485.68 = 72,620/x
  3. Step 3: Cross multiply
    132,236x = 182,485.68 × 72,620
  4. Step 4: Simplify right side
    132,236x = 13,252,110,081.60
  5. Step 5: Solve for x
    x = 13,252,110,081.60/132,236
  6. Step 6: Final answer
    x = 100,215.60

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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.