Home / 136,609.41-188,521.81-76,183.88

Finding the Fourth Proportional to 136,609.41, 188,521.81 and 76,183.88

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Solution

The fourth proportional to 136,609.41, 188,521.81 and 76,183.88 is: 105,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,609.41 : 188,521.81 = 76,183.88 : x
  2. Step 2: Convert to fraction form
    136,609.41/188,521.81 = 76,183.88/x
  3. Step 3: Cross multiply
    136,609.41x = 188,521.81 × 76,183.88
  4. Step 4: Simplify right side
    136,609.41x = 14,362,322,007.81
  5. Step 5: Solve for x
    x = 14,362,322,007.81/136,609.41
  6. Step 6: Final answer
    x = 105,134.21

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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.