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Finding the Fourth Proportional to 122,580, 169,048.08 and 79,514.64

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Solution

The fourth proportional to 122,580, 169,048.08 and 79,514.64 is: 109,657.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,580 : 169,048.08 = 79,514.64 : x
  2. Step 2: Convert to fraction form
    122,580/169,048.08 = 79,514.64/x
  3. Step 3: Cross multiply
    122,580x = 169,048.08 × 79,514.64
  4. Step 4: Simplify right side
    122,580x = 13,441,797,223.89
  5. Step 5: Solve for x
    x = 13,441,797,223.89/122,580
  6. Step 6: Final answer
    x = 109,657.34

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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.