Home / 201,520.55-278,138.13-115,537.30

Finding the Fourth Proportional to 201,520.55, 278,138.13 and 115,537.30

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Solution

The fourth proportional to 201,520.55, 278,138.13 and 115,537.30 is: 159,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,520.55 : 278,138.13 = 115,537.30 : x
  2. Step 2: Convert to fraction form
    201,520.55/278,138.13 = 115,537.30/x
  3. Step 3: Cross multiply
    201,520.55x = 278,138.13 × 115,537.30
  4. Step 4: Simplify right side
    201,520.55x = 32,135,328,567.25
  5. Step 5: Solve for x
    x = 32,135,328,567.25/201,520.55
  6. Step 6: Final answer
    x = 159,464.28

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1.5x scale

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.