Home / 122,739.20-169,382.16-80,297.76

Finding the Fourth Proportional to 122,739.20, 169,382.16 and 80,297.76

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Solution

The fourth proportional to 122,739.20, 169,382.16 and 80,297.76 is: 110,812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,739.20 : 169,382.16 = 80,297.76 : x
  2. Step 2: Convert to fraction form
    122,739.20/169,382.16 = 80,297.76/x
  3. Step 3: Cross multiply
    122,739.20x = 169,382.16 × 80,297.76
  4. Step 4: Simplify right side
    122,739.20x = 13,601,008,031.96
  5. Step 5: Solve for x
    x = 13,601,008,031.96/122,739.20
  6. Step 6: Final answer
    x = 110,812.26

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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.