Home / 138,620.20-191,325.52-87,600.46

Finding the Fourth Proportional to 138,620.20, 191,325.52 and 87,600.46

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Solution

The fourth proportional to 138,620.20, 191,325.52 and 87,600.46 is: 120,907.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,620.20 : 191,325.52 = 87,600.46 : x
  2. Step 2: Convert to fraction form
    138,620.20/191,325.52 = 87,600.46/x
  3. Step 3: Cross multiply
    138,620.20x = 191,325.52 × 87,600.46
  4. Step 4: Simplify right side
    138,620.20x = 16,760,203,561.74
  5. Step 5: Solve for x
    x = 16,760,203,561.74/138,620.20
  6. Step 6: Final answer
    x = 120,907.37

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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.