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Finding the Fourth Proportional to 122,481.90, 183,722.85 and 39,384.30

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Solution

The fourth proportional to 122,481.90, 183,722.85 and 39,384.30 is: 59,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,481.90 : 183,722.85 = 39,384.30 : x
  2. Step 2: Convert to fraction form
    122,481.90/183,722.85 = 39,384.30/x
  3. Step 3: Cross multiply
    122,481.90x = 183,722.85 × 39,384.30
  4. Step 4: Simplify right side
    122,481.90x = 7,235,795,841.26
  5. Step 5: Solve for x
    x = 7,235,795,841.26/122,481.90
  6. Step 6: Final answer
    x = 59,076.45

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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.