Home / 122,515.12-169,089.15-74,796.13

Finding the Fourth Proportional to 122,515.12, 169,089.15 and 74,796.13

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Solution

The fourth proportional to 122,515.12, 169,089.15 and 74,796.13 is: 103,229.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,515.12 : 169,089.15 = 74,796.13 : x
  2. Step 2: Convert to fraction form
    122,515.12/169,089.15 = 74,796.13/x
  3. Step 3: Cross multiply
    122,515.12x = 169,089.15 × 74,796.13
  4. Step 4: Simplify right side
    122,515.12x = 12,647,214,044.99
  5. Step 5: Solve for x
    x = 12,647,214,044.99/122,515.12
  6. Step 6: Final answer
    x = 103,229.82

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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.