Home / 120,530.72-166,332.39-66,815.60

Finding the Fourth Proportional to 120,530.72, 166,332.39 and 66,815.60

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Solution

The fourth proportional to 120,530.72, 166,332.39 and 66,815.60 is: 92,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.72 : 166,332.39 = 66,815.60 : x
  2. Step 2: Convert to fraction form
    120,530.72/166,332.39 = 66,815.60/x
  3. Step 3: Cross multiply
    120,530.72x = 166,332.39 × 66,815.60
  4. Step 4: Simplify right side
    120,530.72x = 11,113,598,437.28
  5. Step 5: Solve for x
    x = 11,113,598,437.28/120,530.72
  6. Step 6: Final answer
    x = 92,205.53

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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.