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Finding the Fourth Proportional to 91,739.75, 126,536.86 and 88,653.58

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Solution

The fourth proportional to 91,739.75, 126,536.86 and 88,653.58 is: 122,280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,739.75 : 126,536.86 = 88,653.58 : x
  2. Step 2: Convert to fraction form
    91,739.75/126,536.86 = 88,653.58/x
  3. Step 3: Cross multiply
    91,739.75x = 126,536.86 × 88,653.58
  4. Step 4: Simplify right side
    91,739.75x = 11,217,945,008.15
  5. Step 5: Solve for x
    x = 11,217,945,008.15/91,739.75
  6. Step 6: Final answer
    x = 122,280.09

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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.