Home / 189,212.15-261,103.40-107,529.80

Finding the Fourth Proportional to 189,212.15, 261,103.40 and 107,529.80

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Solution

The fourth proportional to 189,212.15, 261,103.40 and 107,529.80 is: 148,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,212.15 : 261,103.40 = 107,529.80 : x
  2. Step 2: Convert to fraction form
    189,212.15/261,103.40 = 107,529.80/x
  3. Step 3: Cross multiply
    189,212.15x = 261,103.40 × 107,529.80
  4. Step 4: Simplify right side
    189,212.15x = 28,076,394,941.39
  5. Step 5: Solve for x
    x = 28,076,394,941.39/189,212.15
  6. Step 6: Final answer
    x = 148,385.79

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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.