Home / 120,513.77-166,308.71-66,065.84

Finding the Fourth Proportional to 120,513.77, 166,308.71 and 66,065.84

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Solution

The fourth proportional to 120,513.77, 166,308.71 and 66,065.84 is: 91,170.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,513.77 : 166,308.71 = 66,065.84 : x
  2. Step 2: Convert to fraction form
    120,513.77/166,308.71 = 66,065.84/x
  3. Step 3: Cross multiply
    120,513.77x = 166,308.71 × 66,065.84
  4. Step 4: Simplify right side
    120,513.77x = 10,987,324,790.63
  5. Step 5: Solve for x
    x = 10,987,324,790.63/120,513.77
  6. Step 6: Final answer
    x = 91,170.70

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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.