Home / 100,231.67-138,319.70-59,945.43

Finding the Fourth Proportional to 100,231.67, 138,319.70 and 59,945.43

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Solution

The fourth proportional to 100,231.67, 138,319.70 and 59,945.43 is: 82,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,231.67 : 138,319.70 = 59,945.43 : x
  2. Step 2: Convert to fraction form
    100,231.67/138,319.70 = 59,945.43/x
  3. Step 3: Cross multiply
    100,231.67x = 138,319.70 × 59,945.43
  4. Step 4: Simplify right side
    100,231.67x = 8,291,633,893.97
  5. Step 5: Solve for x
    x = 8,291,633,893.97/100,231.67
  6. Step 6: Final answer
    x = 82,724.69

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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.