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Finding the Fourth Proportional to 122,620, 183,763.68 and 55,977.52

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Solution

The fourth proportional to 122,620, 183,763.68 and 55,977.52 is: 83,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,620 : 183,763.68 = 55,977.52 : x
  2. Step 2: Convert to fraction form
    122,620/183,763.68 = 55,977.52/x
  3. Step 3: Cross multiply
    122,620x = 183,763.68 × 55,977.52
  4. Step 4: Simplify right side
    122,620x = 10,286,635,072.47
  5. Step 5: Solve for x
    x = 10,286,635,072.47/122,620
  6. Step 6: Final answer
    x = 83,890.35

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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.