Home / 120,265.72-165,964.21-66,550.70

Finding the Fourth Proportional to 120,265.72, 165,964.21 and 66,550.70

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Solution

The fourth proportional to 120,265.72, 165,964.21 and 66,550.70 is: 91,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,265.72 : 165,964.21 = 66,550.70 : x
  2. Step 2: Convert to fraction form
    120,265.72/165,964.21 = 66,550.70/x
  3. Step 3: Cross multiply
    120,265.72x = 165,964.21 × 66,550.70
  4. Step 4: Simplify right side
    120,265.72x = 11,045,034,598.98
  5. Step 5: Solve for x
    x = 11,045,034,598.98/120,265.72
  6. Step 6: Final answer
    x = 91,838.60

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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.