Home / 151,108.38-208,536.62-87,433.86

Finding the Fourth Proportional to 151,108.38, 208,536.62 and 87,433.86

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Solution

The fourth proportional to 151,108.38, 208,536.62 and 87,433.86 is: 120,662.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,108.38 : 208,536.62 = 87,433.86 : x
  2. Step 2: Convert to fraction form
    151,108.38/208,536.62 = 87,433.86/x
  3. Step 3: Cross multiply
    151,108.38x = 208,536.62 × 87,433.86
  4. Step 4: Simplify right side
    151,108.38x = 18,233,161,200.78
  5. Step 5: Solve for x
    x = 18,233,161,200.78/151,108.38
  6. Step 6: Final answer
    x = 120,662.81

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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.