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Finding the Fourth Proportional to 122,999.58, 169,740 and 69,285.24

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Solution

The fourth proportional to 122,999.58, 169,740 and 69,285.24 is: 95,613.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,999.58 : 169,740 = 69,285.24 : x
  2. Step 2: Convert to fraction form
    122,999.58/169,740 = 69,285.24/x
  3. Step 3: Cross multiply
    122,999.58x = 169,740 × 69,285.24
  4. Step 4: Simplify right side
    122,999.58x = 11,760,476,637.60
  5. Step 5: Solve for x
    x = 11,760,476,637.60/122,999.58
  6. Step 6: Final answer
    x = 95,613.96

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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.