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Finding the Fourth Proportional to 122,495.60, 183,743.40 and 80,505.20

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Solution

The fourth proportional to 122,495.60, 183,743.40 and 80,505.20 is: 120,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,495.60 : 183,743.40 = 80,505.20 : x
  2. Step 2: Convert to fraction form
    122,495.60/183,743.40 = 80,505.20/x
  3. Step 3: Cross multiply
    122,495.60x = 183,743.40 × 80,505.20
  4. Step 4: Simplify right side
    122,495.60x = 14,792,299,165.68
  5. Step 5: Solve for x
    x = 14,792,299,165.68/122,495.60
  6. Step 6: Final answer
    x = 120,757.80

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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.