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Finding the Fourth Proportional to 132,882.88, 183,274.56 and 85,140.88

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Solution

The fourth proportional to 132,882.88, 183,274.56 and 85,140.88 is: 117,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,882.88 : 183,274.56 = 85,140.88 : x
  2. Step 2: Convert to fraction form
    132,882.88/183,274.56 = 85,140.88/x
  3. Step 3: Cross multiply
    132,882.88x = 183,274.56 × 85,140.88
  4. Step 4: Simplify right side
    132,882.88x = 15,604,157,320.01
  5. Step 5: Solve for x
    x = 15,604,157,320.01/132,882.88
  6. Step 6: Final answer
    x = 117,427.90

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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.