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Finding the Fourth Proportional to 122,480.90, 183,721.35 and 39,383.30

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Solution

The fourth proportional to 122,480.90, 183,721.35 and 39,383.30 is: 59,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,480.90 : 183,721.35 = 39,383.30 : x
  2. Step 2: Convert to fraction form
    122,480.90/183,721.35 = 39,383.30/x
  3. Step 3: Cross multiply
    122,480.90x = 183,721.35 × 39,383.30
  4. Step 4: Simplify right side
    122,480.90x = 7,235,553,043.46
  5. Step 5: Solve for x
    x = 7,235,553,043.46/122,480.90
  6. Step 6: Final answer
    x = 59,074.95

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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.