Home / 203,705.51-281,165.27-139,200.85

Finding the Fourth Proportional to 203,705.51, 281,165.27 and 139,200.85

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Solution

The fourth proportional to 203,705.51, 281,165.27 and 139,200.85 is: 192,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,705.51 : 281,165.27 = 139,200.85 : x
  2. Step 2: Convert to fraction form
    203,705.51/281,165.27 = 139,200.85/x
  3. Step 3: Cross multiply
    203,705.51x = 281,165.27 × 139,200.85
  4. Step 4: Simplify right side
    203,705.51x = 39,138,444,574.48
  5. Step 5: Solve for x
    x = 39,138,444,574.48/203,705.51
  6. Step 6: Final answer
    x = 192,132.48

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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.