Home / 81,326.18-112,029.60-69,187.79

Finding the Fourth Proportional to 81,326.18, 112,029.60 and 69,187.79

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Solution

The fourth proportional to 81,326.18, 112,029.60 and 69,187.79 is: 95,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,326.18 : 112,029.60 = 69,187.79 : x
  2. Step 2: Convert to fraction form
    81,326.18/112,029.60 = 69,187.79/x
  3. Step 3: Cross multiply
    81,326.18x = 112,029.60 × 69,187.79
  4. Step 4: Simplify right side
    81,326.18x = 7,751,079,878.44
  5. Step 5: Solve for x
    x = 7,751,079,878.44/81,326.18
  6. Step 6: Final answer
    x = 95,308.54

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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.