Home / 122,491.36-169,025-68,782.24

Finding the Fourth Proportional to 122,491.36, 169,025 and 68,782.24

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Solution

The fourth proportional to 122,491.36, 169,025 and 68,782.24 is: 94,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,491.36 : 169,025 = 68,782.24 : x
  2. Step 2: Convert to fraction form
    122,491.36/169,025 = 68,782.24/x
  3. Step 3: Cross multiply
    122,491.36x = 169,025 × 68,782.24
  4. Step 4: Simplify right side
    122,491.36x = 11,625,918,116
  5. Step 5: Solve for x
    x = 11,625,918,116/122,491.36
  6. Step 6: Final answer
    x = 94,912.15

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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.