Home / 102,236.90-141,142.26-71,703.74

Finding the Fourth Proportional to 102,236.90, 141,142.26 and 71,703.74

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Solution

The fourth proportional to 102,236.90, 141,142.26 and 71,703.74 is: 98,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,236.90 : 141,142.26 = 71,703.74 : x
  2. Step 2: Convert to fraction form
    102,236.90/141,142.26 = 71,703.74/x
  3. Step 3: Cross multiply
    102,236.90x = 141,142.26 × 71,703.74
  4. Step 4: Simplify right side
    102,236.90x = 10,120,427,914.05
  5. Step 5: Solve for x
    x = 10,120,427,914.05/102,236.90
  6. Step 6: Final answer
    x = 98,989.97

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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.