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Finding the Fourth Proportional to 122,452.86, 169,064.67 and 74,733.89

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Solution

The fourth proportional to 122,452.86, 169,064.67 and 74,733.89 is: 103,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,452.86 : 169,064.67 = 74,733.89 : x
  2. Step 2: Convert to fraction form
    122,452.86/169,064.67 = 74,733.89/x
  3. Step 3: Cross multiply
    122,452.86x = 169,064.67 × 74,733.89
  4. Step 4: Simplify right side
    122,452.86x = 12,634,860,416.21
  5. Step 5: Solve for x
    x = 12,634,860,416.21/122,452.86
  6. Step 6: Final answer
    x = 103,181.42

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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.