Home / 189,815.50-261,922.65-104,921.02

Finding the Fourth Proportional to 189,815.50, 261,922.65 and 104,921.02

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Solution

The fourth proportional to 189,815.50, 261,922.65 and 104,921.02 is: 144,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,815.50 : 261,922.65 = 104,921.02 : x
  2. Step 2: Convert to fraction form
    189,815.50/261,922.65 = 104,921.02/x
  3. Step 3: Cross multiply
    189,815.50x = 261,922.65 × 104,921.02
  4. Step 4: Simplify right side
    189,815.50x = 27,481,191,599.10
  5. Step 5: Solve for x
    x = 27,481,191,599.10/189,815.50
  6. Step 6: Final answer
    x = 144,778.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.