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Finding the Fourth Proportional to 122,114.20, 183,203.70 and 43,220.20

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Solution

The fourth proportional to 122,114.20, 183,203.70 and 43,220.20 is: 64,841.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,114.20 : 183,203.70 = 43,220.20 : x
  2. Step 2: Convert to fraction form
    122,114.20/183,203.70 = 43,220.20/x
  3. Step 3: Cross multiply
    122,114.20x = 183,203.70 × 43,220.20
  4. Step 4: Simplify right side
    122,114.20x = 7,918,100,554.74
  5. Step 5: Solve for x
    x = 7,918,100,554.74/122,114.20
  6. Step 6: Final answer
    x = 64,841.77

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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.