Home / 98,738.19-147,762.83-80,761.05

Finding the Fourth Proportional to 98,738.19, 147,762.83 and 80,761.05

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Solution

The fourth proportional to 98,738.19, 147,762.83 and 80,761.05 is: 120,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,738.19 : 147,762.83 = 80,761.05 : x
  2. Step 2: Convert to fraction form
    98,738.19/147,762.83 = 80,761.05/x
  3. Step 3: Cross multiply
    98,738.19x = 147,762.83 × 80,761.05
  4. Step 4: Simplify right side
    98,738.19x = 11,933,481,503.67
  5. Step 5: Solve for x
    x = 11,933,481,503.67/98,738.19
  6. Step 6: Final answer
    x = 120,859.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.