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Finding the Fourth Proportional to 122,119.20, 183,211.20 and 43,225.20

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Solution

The fourth proportional to 122,119.20, 183,211.20 and 43,225.20 is: 64,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,119.20 : 183,211.20 = 43,225.20 : x
  2. Step 2: Convert to fraction form
    122,119.20/183,211.20 = 43,225.20/x
  3. Step 3: Cross multiply
    122,119.20x = 183,211.20 × 43,225.20
  4. Step 4: Simplify right side
    122,119.20x = 7,919,340,762.24
  5. Step 5: Solve for x
    x = 7,919,340,762.24/122,119.20
  6. Step 6: Final answer
    x = 64,849.27

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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.