Home / 136,774.26-188,779.97-80,203.86

Finding the Fourth Proportional to 136,774.26, 188,779.97 and 80,203.86

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Solution

The fourth proportional to 136,774.26, 188,779.97 and 80,203.86 is: 110,699.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,774.26 : 188,779.97 = 80,203.86 : x
  2. Step 2: Convert to fraction form
    136,774.26/188,779.97 = 80,203.86/x
  3. Step 3: Cross multiply
    136,774.26x = 188,779.97 × 80,203.86
  4. Step 4: Simplify right side
    136,774.26x = 15,140,881,883.66
  5. Step 5: Solve for x
    x = 15,140,881,883.66/136,774.26
  6. Step 6: Final answer
    x = 110,699.79

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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.