Home / 149,138.37-205,537.11-139,668.66

Finding the Fourth Proportional to 149,138.37, 205,537.11 and 139,668.66

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Solution

The fourth proportional to 149,138.37, 205,537.11 and 139,668.66 is: 192,486.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,138.37 : 205,537.11 = 139,668.66 : x
  2. Step 2: Convert to fraction form
    149,138.37/205,537.11 = 139,668.66/x
  3. Step 3: Cross multiply
    149,138.37x = 205,537.11 × 139,668.66
  4. Step 4: Simplify right side
    149,138.37x = 28,707,092,733.97
  5. Step 5: Solve for x
    x = 28,707,092,733.97/149,138.37
  6. Step 6: Final answer
    x = 192,486.30

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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.