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Finding the Fourth Proportional to 122,483.80, 183,725.70 and 102,800.80

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Solution

The fourth proportional to 122,483.80, 183,725.70 and 102,800.80 is: 154,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,483.80 : 183,725.70 = 102,800.80 : x
  2. Step 2: Convert to fraction form
    122,483.80/183,725.70 = 102,800.80/x
  3. Step 3: Cross multiply
    122,483.80x = 183,725.70 × 102,800.80
  4. Step 4: Simplify right side
    122,483.80x = 18,887,148,940.56
  5. Step 5: Solve for x
    x = 18,887,148,940.56/122,483.80
  6. Step 6: Final answer
    x = 154,201.20

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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.