Home / 151,403.27-208,936.52-87,777.96

Finding the Fourth Proportional to 151,403.27, 208,936.52 and 87,777.96

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Solution

The fourth proportional to 151,403.27, 208,936.52 and 87,777.96 is: 121,133.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,403.27 : 208,936.52 = 87,777.96 : x
  2. Step 2: Convert to fraction form
    151,403.27/208,936.52 = 87,777.96/x
  3. Step 3: Cross multiply
    151,403.27x = 208,936.52 × 87,777.96
  4. Step 4: Simplify right side
    151,403.27x = 18,340,021,056.21
  5. Step 5: Solve for x
    x = 18,340,021,056.21/151,403.27
  6. Step 6: Final answer
    x = 121,133.59

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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.