Home / 189,161.66-261,036.42-103,118.88

Finding the Fourth Proportional to 189,161.66, 261,036.42 and 103,118.88

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Solution

The fourth proportional to 189,161.66, 261,036.42 and 103,118.88 is: 142,300.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,161.66 : 261,036.42 = 103,118.88 : x
  2. Step 2: Convert to fraction form
    189,161.66/261,036.42 = 103,118.88/x
  3. Step 3: Cross multiply
    189,161.66x = 261,036.42 × 103,118.88
  4. Step 4: Simplify right side
    189,161.66x = 26,917,783,269.61
  5. Step 5: Solve for x
    x = 26,917,783,269.61/189,161.66
  6. Step 6: Final answer
    x = 142,300.42

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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.