Home / 120,429.62-166,202.25-66,719.60

Finding the Fourth Proportional to 120,429.62, 166,202.25 and 66,719.60

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Solution

The fourth proportional to 120,429.62, 166,202.25 and 66,719.60 is: 92,078.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,429.62 : 166,202.25 = 66,719.60 : x
  2. Step 2: Convert to fraction form
    120,429.62/166,202.25 = 66,719.60/x
  3. Step 3: Cross multiply
    120,429.62x = 166,202.25 × 66,719.60
  4. Step 4: Simplify right side
    120,429.62x = 11,088,947,639.10
  5. Step 5: Solve for x
    x = 11,088,947,639.10/120,429.62
  6. Step 6: Final answer
    x = 92,078.24

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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.