Home / 120,834.91-166,752.27-66,390.59

Finding the Fourth Proportional to 120,834.91, 166,752.27 and 66,390.59

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Solution

The fourth proportional to 120,834.91, 166,752.27 and 66,390.59 is: 91,619.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,834.91 : 166,752.27 = 66,390.59 : x
  2. Step 2: Convert to fraction form
    120,834.91/166,752.27 = 66,390.59/x
  3. Step 3: Cross multiply
    120,834.91x = 166,752.27 × 66,390.59
  4. Step 4: Simplify right side
    120,834.91x = 11,070,782,123.27
  5. Step 5: Solve for x
    x = 11,070,782,123.27/120,834.91
  6. Step 6: Final answer
    x = 91,619.07

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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.