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Finding the Fourth Proportional to 122,625.60, 183,841.20 and 67,221.60

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Solution

The fourth proportional to 122,625.60, 183,841.20 and 67,221.60 is: 100,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,625.60 : 183,841.20 = 67,221.60 : x
  2. Step 2: Convert to fraction form
    122,625.60/183,841.20 = 67,221.60/x
  3. Step 3: Cross multiply
    122,625.60x = 183,841.20 × 67,221.60
  4. Step 4: Simplify right side
    122,625.60x = 12,358,099,609.92
  5. Step 5: Solve for x
    x = 12,358,099,609.92/122,625.60
  6. Step 6: Final answer
    x = 100,779.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.