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Finding the Fourth Proportional to 122,841.70, 169,613.92 and 120,879.92

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Solution

The fourth proportional to 122,841.70, 169,613.92 and 120,879.92 is: 166,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,841.70 : 169,613.92 = 120,879.92 : x
  2. Step 2: Convert to fraction form
    122,841.70/169,613.92 = 120,879.92/x
  3. Step 3: Cross multiply
    122,841.70x = 169,613.92 × 120,879.92
  4. Step 4: Simplify right side
    122,841.70x = 20,502,917,080.49
  5. Step 5: Solve for x
    x = 20,502,917,080.49/122,841.70
  6. Step 6: Final answer
    x = 166,905.19

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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.