Home / 209,126.38-313,513.18-90,708.52

Finding the Fourth Proportional to 209,126.38, 313,513.18 and 90,708.52

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Solution

The fourth proportional to 209,126.38, 313,513.18 and 90,708.52 is: 135,986.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,126.38 : 313,513.18 = 90,708.52 : x
  2. Step 2: Convert to fraction form
    209,126.38/313,513.18 = 90,708.52/x
  3. Step 3: Cross multiply
    209,126.38x = 313,513.18 × 90,708.52
  4. Step 4: Simplify right side
    209,126.38x = 28,438,316,558.29
  5. Step 5: Solve for x
    x = 28,438,316,558.29/209,126.38
  6. Step 6: Final answer
    x = 135,986.27

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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.