Home / 120,400.03-166,150.36-69,412.86

Finding the Fourth Proportional to 120,400.03, 166,150.36 and 69,412.86

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Solution

The fourth proportional to 120,400.03, 166,150.36 and 69,412.86 is: 95,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,400.03 : 166,150.36 = 69,412.86 : x
  2. Step 2: Convert to fraction form
    120,400.03/166,150.36 = 69,412.86/x
  3. Step 3: Cross multiply
    120,400.03x = 166,150.36 × 69,412.86
  4. Step 4: Simplify right side
    120,400.03x = 11,532,971,504.10
  5. Step 5: Solve for x
    x = 11,532,971,504.10/120,400.03
  6. Step 6: Final answer
    x = 95,788.78

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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.