Home / 120,409.08-166,164.21-69,421.57

Finding the Fourth Proportional to 120,409.08, 166,164.21 and 69,421.57

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Solution

The fourth proportional to 120,409.08, 166,164.21 and 69,421.57 is: 95,801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,409.08 : 166,164.21 = 69,421.57 : x
  2. Step 2: Convert to fraction form
    120,409.08/166,164.21 = 69,421.57/x
  3. Step 3: Cross multiply
    120,409.08x = 166,164.21 × 69,421.57
  4. Step 4: Simplify right side
    120,409.08x = 11,535,380,855.27
  5. Step 5: Solve for x
    x = 11,535,380,855.27/120,409.08
  6. Step 6: Final answer
    x = 95,801.58

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1.5x scale

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.