Home / 151,418.68-208,964.82-87,776.44

Finding the Fourth Proportional to 151,418.68, 208,964.82 and 87,776.44

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Solution

The fourth proportional to 151,418.68, 208,964.82 and 87,776.44 is: 121,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,418.68 : 208,964.82 = 87,776.44 : x
  2. Step 2: Convert to fraction form
    151,418.68/208,964.82 = 87,776.44/x
  3. Step 3: Cross multiply
    151,418.68x = 208,964.82 × 87,776.44
  4. Step 4: Simplify right side
    151,418.68x = 18,342,187,984.84
  5. Step 5: Solve for x
    x = 18,342,187,984.84/151,418.68
  6. Step 6: Final answer
    x = 121,135.57

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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.