Home / 98,739.19-147,764.33-80,762.05

Finding the Fourth Proportional to 98,739.19, 147,764.33 and 80,762.05

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Solution

The fourth proportional to 98,739.19, 147,764.33 and 80,762.05 is: 120,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,739.19 : 147,764.33 = 80,762.05 : x
  2. Step 2: Convert to fraction form
    98,739.19/147,764.33 = 80,762.05/x
  3. Step 3: Cross multiply
    98,739.19x = 147,764.33 × 80,762.05
  4. Step 4: Simplify right side
    98,739.19x = 11,933,750,207.68
  5. Step 5: Solve for x
    x = 11,933,750,207.68/98,739.19
  6. Step 6: Final answer
    x = 120,861.33

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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.