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Finding the Fourth Proportional to 132,963.61, 183,489.78 and 72,534.50

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Solution

The fourth proportional to 132,963.61, 183,489.78 and 72,534.50 is: 100,097.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,963.61 : 183,489.78 = 72,534.50 : x
  2. Step 2: Convert to fraction form
    132,963.61/183,489.78 = 72,534.50/x
  3. Step 3: Cross multiply
    132,963.61x = 183,489.78 × 72,534.50
  4. Step 4: Simplify right side
    132,963.61x = 13,309,338,769.98
  5. Step 5: Solve for x
    x = 13,309,338,769.98/132,963.61
  6. Step 6: Final answer
    x = 100,097.60

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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.