Home / 208,997.72-288,536.39-137,585.33

Finding the Fourth Proportional to 208,997.72, 288,536.39 and 137,585.33

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Solution

The fourth proportional to 208,997.72, 288,536.39 and 137,585.33 is: 189,946.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,997.72 : 288,536.39 = 137,585.33 : x
  2. Step 2: Convert to fraction form
    208,997.72/288,536.39 = 137,585.33/x
  3. Step 3: Cross multiply
    208,997.72x = 288,536.39 × 137,585.33
  4. Step 4: Simplify right side
    208,997.72x = 39,698,372,820.50
  5. Step 5: Solve for x
    x = 39,698,372,820.50/208,997.72
  6. Step 6: Final answer
    x = 189,946.44

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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.