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Finding the Fourth Proportional to 122,495.78, 169,083.80 and 79,399.22

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Solution

The fourth proportional to 122,495.78, 169,083.80 and 79,399.22 is: 109,596.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,495.78 : 169,083.80 = 79,399.22 : x
  2. Step 2: Convert to fraction form
    122,495.78/169,083.80 = 79,399.22/x
  3. Step 3: Cross multiply
    122,495.78x = 169,083.80 × 79,399.22
  4. Step 4: Simplify right side
    122,495.78x = 13,425,121,834.64
  5. Step 5: Solve for x
    x = 13,425,121,834.64/122,495.78
  6. Step 6: Final answer
    x = 109,596.61

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1.5x scale

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.