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Finding the Fourth Proportional to 123,898.60, 185,847.90 and 121,930.30

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Solution

The fourth proportional to 123,898.60, 185,847.90 and 121,930.30 is: 182,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,898.60 : 185,847.90 = 121,930.30 : x
  2. Step 2: Convert to fraction form
    123,898.60/185,847.90 = 121,930.30/x
  3. Step 3: Cross multiply
    123,898.60x = 185,847.90 × 121,930.30
  4. Step 4: Simplify right side
    123,898.60x = 22,660,490,201.37
  5. Step 5: Solve for x
    x = 22,660,490,201.37/123,898.60
  6. Step 6: Final answer
    x = 182,895.45

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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.