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Finding the Fourth Proportional to 122,645.80, 183,968.70 and 43,762.60

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Solution

The fourth proportional to 122,645.80, 183,968.70 and 43,762.60 is: 65,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,645.80 : 183,968.70 = 43,762.60 : x
  2. Step 2: Convert to fraction form
    122,645.80/183,968.70 = 43,762.60/x
  3. Step 3: Cross multiply
    122,645.80x = 183,968.70 × 43,762.60
  4. Step 4: Simplify right side
    122,645.80x = 8,050,948,630.62
  5. Step 5: Solve for x
    x = 8,050,948,630.62/122,645.80
  6. Step 6: Final answer
    x = 65,643.90

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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.