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Finding the Fourth Proportional to 136,005.80, 203,879.10 and 106,003.40

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Solution

The fourth proportional to 136,005.80, 203,879.10 and 106,003.40 is: 158,904.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,005.80 : 203,879.10 = 106,003.40 : x
  2. Step 2: Convert to fraction form
    136,005.80/203,879.10 = 106,003.40/x
  3. Step 3: Cross multiply
    136,005.80x = 203,879.10 × 106,003.40
  4. Step 4: Simplify right side
    136,005.80x = 21,611,877,788.94
  5. Step 5: Solve for x
    x = 21,611,877,788.94/136,005.80
  6. Step 6: Final answer
    x = 158,904.09

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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.