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Finding the Fourth Proportional to 106,338.40, 159,469.20 and 53,730.40

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Solution

The fourth proportional to 106,338.40, 159,469.20 and 53,730.40 is: 80,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,338.40 : 159,469.20 = 53,730.40 : x
  2. Step 2: Convert to fraction form
    106,338.40/159,469.20 = 53,730.40/x
  3. Step 3: Cross multiply
    106,338.40x = 159,469.20 × 53,730.40
  4. Step 4: Simplify right side
    106,338.40x = 8,568,343,903.68
  5. Step 5: Solve for x
    x = 8,568,343,903.68/106,338.40
  6. Step 6: Final answer
    x = 80,576.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.