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Finding the Fourth Proportional to 132,880.88, 183,271.80 and 85,138.88

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Solution

The fourth proportional to 132,880.88, 183,271.80 and 85,138.88 is: 117,425.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,880.88 : 183,271.80 = 85,138.88 : x
  2. Step 2: Convert to fraction form
    132,880.88/183,271.80 = 85,138.88/x
  3. Step 3: Cross multiply
    132,880.88x = 183,271.80 × 85,138.88
  4. Step 4: Simplify right side
    132,880.88x = 15,603,555,787.58
  5. Step 5: Solve for x
    x = 15,603,555,787.58/132,880.88
  6. Step 6: Final answer
    x = 117,425.14

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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.