Home / 87,170.21-119,917.40-76,366.43

Finding the Fourth Proportional to 87,170.21, 119,917.40 and 76,366.43

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Solution

The fourth proportional to 87,170.21, 119,917.40 and 76,366.43 is: 105,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,170.21 : 119,917.40 = 76,366.43 : x
  2. Step 2: Convert to fraction form
    87,170.21/119,917.40 = 76,366.43/x
  3. Step 3: Cross multiply
    87,170.21x = 119,917.40 × 76,366.43
  4. Step 4: Simplify right side
    87,170.21x = 9,157,663,201.15
  5. Step 5: Solve for x
    x = 9,157,663,201.15/87,170.21
  6. Step 6: Final answer
    x = 105,054.96

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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.