Home / 166,405.21-229,639.31-90,953.71

Finding the Fourth Proportional to 166,405.21, 229,639.31 and 90,953.71

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Solution

The fourth proportional to 166,405.21, 229,639.31 and 90,953.71 is: 125,516.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,405.21 : 229,639.31 = 90,953.71 : x
  2. Step 2: Convert to fraction form
    166,405.21/229,639.31 = 90,953.71/x
  3. Step 3: Cross multiply
    166,405.21x = 229,639.31 × 90,953.71
  4. Step 4: Simplify right side
    166,405.21x = 20,886,546,751.57
  5. Step 5: Solve for x
    x = 20,886,546,751.57/166,405.21
  6. Step 6: Final answer
    x = 125,516.18

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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.