Home / 120,731.21-166,609.71-75,435.46

Finding the Fourth Proportional to 120,731.21, 166,609.71 and 75,435.46

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Solution

The fourth proportional to 120,731.21, 166,609.71 and 75,435.46 is: 104,101.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,731.21 : 166,609.71 = 75,435.46 : x
  2. Step 2: Convert to fraction form
    120,731.21/166,609.71 = 75,435.46/x
  3. Step 3: Cross multiply
    120,731.21x = 166,609.71 × 75,435.46
  4. Step 4: Simplify right side
    120,731.21x = 12,568,280,322.58
  5. Step 5: Solve for x
    x = 12,568,280,322.58/120,731.21
  6. Step 6: Final answer
    x = 104,101.33

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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.