Home / 135,884.16-204,020.64-76,708.80

Finding the Fourth Proportional to 135,884.16, 204,020.64 and 76,708.80

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Solution

The fourth proportional to 135,884.16, 204,020.64 and 76,708.80 is: 115,172.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,884.16 : 204,020.64 = 76,708.80 : x
  2. Step 2: Convert to fraction form
    135,884.16/204,020.64 = 76,708.80/x
  3. Step 3: Cross multiply
    135,884.16x = 204,020.64 × 76,708.80
  4. Step 4: Simplify right side
    135,884.16x = 15,650,178,469.63
  5. Step 5: Solve for x
    x = 15,650,178,469.63/135,884.16
  6. Step 6: Final answer
    x = 115,172.94

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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.