Home / 151,369.38-208,887.12-87,713.10

Finding the Fourth Proportional to 151,369.38, 208,887.12 and 87,713.10

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Solution

The fourth proportional to 151,369.38, 208,887.12 and 87,713.10 is: 121,042.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,369.38 : 208,887.12 = 87,713.10 : x
  2. Step 2: Convert to fraction form
    151,369.38/208,887.12 = 87,713.10/x
  3. Step 3: Cross multiply
    151,369.38x = 208,887.12 × 87,713.10
  4. Step 4: Simplify right side
    151,369.38x = 18,322,136,845.27
  5. Step 5: Solve for x
    x = 18,322,136,845.27/151,369.38
  6. Step 6: Final answer
    x = 121,042.56

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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.