Home / 138,914.18-191,697.60-81,552.56

Finding the Fourth Proportional to 138,914.18, 191,697.60 and 81,552.56

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Solution

The fourth proportional to 138,914.18, 191,697.60 and 81,552.56 is: 112,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,914.18 : 191,697.60 = 81,552.56 : x
  2. Step 2: Convert to fraction form
    138,914.18/191,697.60 = 81,552.56/x
  3. Step 3: Cross multiply
    138,914.18x = 191,697.60 × 81,552.56
  4. Step 4: Simplify right side
    138,914.18x = 15,633,430,025.86
  5. Step 5: Solve for x
    x = 15,633,430,025.86/138,914.18
  6. Step 6: Final answer
    x = 112,540.20

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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.