Home / 203,905.15-305,860.80-70,789.64

Finding the Fourth Proportional to 203,905.15, 305,860.80 and 70,789.64

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Solution

The fourth proportional to 203,905.15, 305,860.80 and 70,789.64 is: 106,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,905.15 : 305,860.80 = 70,789.64 : x
  2. Step 2: Convert to fraction form
    203,905.15/305,860.80 = 70,789.64/x
  3. Step 3: Cross multiply
    203,905.15x = 305,860.80 × 70,789.64
  4. Step 4: Simplify right side
    203,905.15x = 21,651,774,658.27
  5. Step 5: Solve for x
    x = 21,651,774,658.27/203,905.15
  6. Step 6: Final answer
    x = 106,185.52

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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.