Home / 109,786.98-151,447.60-66,779.62

Finding the Fourth Proportional to 109,786.98, 151,447.60 and 66,779.62

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Solution

The fourth proportional to 109,786.98, 151,447.60 and 66,779.62 is: 92,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,786.98 : 151,447.60 = 66,779.62 : x
  2. Step 2: Convert to fraction form
    109,786.98/151,447.60 = 66,779.62/x
  3. Step 3: Cross multiply
    109,786.98x = 151,447.60 × 66,779.62
  4. Step 4: Simplify right side
    109,786.98x = 10,113,613,177.91
  5. Step 5: Solve for x
    x = 10,113,613,177.91/109,786.98
  6. Step 6: Final answer
    x = 92,120.33

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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.