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Finding the Fourth Proportional to 134,657.88, 185,819.46 and 74,229

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Solution

The fourth proportional to 134,657.88, 185,819.46 and 74,229 is: 102,431.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,657.88 : 185,819.46 = 74,229 : x
  2. Step 2: Convert to fraction form
    134,657.88/185,819.46 = 74,229/x
  3. Step 3: Cross multiply
    134,657.88x = 185,819.46 × 74,229
  4. Step 4: Simplify right side
    134,657.88x = 13,793,192,696.34
  5. Step 5: Solve for x
    x = 13,793,192,696.34/134,657.88
  6. Step 6: Final answer
    x = 102,431.38

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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.