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Finding the Fourth Proportional to 132,636.88, 183,037.08 and 72,208.05

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Solution

The fourth proportional to 132,636.88, 183,037.08 and 72,208.05 is: 99,646.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,636.88 : 183,037.08 = 72,208.05 : x
  2. Step 2: Convert to fraction form
    132,636.88/183,037.08 = 72,208.05/x
  3. Step 3: Cross multiply
    132,636.88x = 183,037.08 × 72,208.05
  4. Step 4: Simplify right side
    132,636.88x = 13,216,750,624.49
  5. Step 5: Solve for x
    x = 13,216,750,624.49/132,636.88
  6. Step 6: Final answer
    x = 99,646.12

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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.