Home / 119,481.12-164,815.20-74,691.36

Finding the Fourth Proportional to 119,481.12, 164,815.20 and 74,691.36

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Solution

The fourth proportional to 119,481.12, 164,815.20 and 74,691.36 is: 103,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,481.12 : 164,815.20 = 74,691.36 : x
  2. Step 2: Convert to fraction form
    119,481.12/164,815.20 = 74,691.36/x
  3. Step 3: Cross multiply
    119,481.12x = 164,815.20 × 74,691.36
  4. Step 4: Simplify right side
    119,481.12x = 12,310,271,436.67
  5. Step 5: Solve for x
    x = 12,310,271,436.67/119,481.12
  6. Step 6: Final answer
    x = 103,031.10

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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.