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Finding the Fourth Proportional to 132,869.26, 183,255.90 and 85,127.08

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Solution

The fourth proportional to 132,869.26, 183,255.90 and 85,127.08 is: 117,408.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,869.26 : 183,255.90 = 85,127.08 : x
  2. Step 2: Convert to fraction form
    132,869.26/183,255.90 = 85,127.08/x
  3. Step 3: Cross multiply
    132,869.26x = 183,255.90 × 85,127.08
  4. Step 4: Simplify right side
    132,869.26x = 15,600,039,659.77
  5. Step 5: Solve for x
    x = 15,600,039,659.77/132,869.26
  6. Step 6: Final answer
    x = 117,408.95

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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.