Home / 98,071.56-134,914.05-85,917.31

Finding the Fourth Proportional to 98,071.56, 134,914.05 and 85,917.31

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Solution

The fourth proportional to 98,071.56, 134,914.05 and 85,917.31 is: 118,193.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,071.56 : 134,914.05 = 85,917.31 : x
  2. Step 2: Convert to fraction form
    98,071.56/134,914.05 = 85,917.31/x
  3. Step 3: Cross multiply
    98,071.56x = 134,914.05 × 85,917.31
  4. Step 4: Simplify right side
    98,071.56x = 11,591,451,919.92
  5. Step 5: Solve for x
    x = 11,591,451,919.92/98,071.56
  6. Step 6: Final answer
    x = 118,193.82

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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.