Home / 189,442.91-261,529.62-138,398.33

Finding the Fourth Proportional to 189,442.91, 261,529.62 and 138,398.33

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Solution

The fourth proportional to 189,442.91, 261,529.62 and 138,398.33 is: 191,061.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,442.91 : 261,529.62 = 138,398.33 : x
  2. Step 2: Convert to fraction form
    189,442.91/261,529.62 = 138,398.33/x
  3. Step 3: Cross multiply
    189,442.91x = 261,529.62 × 138,398.33
  4. Step 4: Simplify right side
    189,442.91x = 36,195,262,653.53
  5. Step 5: Solve for x
    x = 36,195,262,653.53/189,442.91
  6. Step 6: Final answer
    x = 191,061.59

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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.