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Finding the Fourth Proportional to 168,109.10, 252,163.65 and 155,278.70

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Solution

The fourth proportional to 168,109.10, 252,163.65 and 155,278.70 is: 232,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,109.10 : 252,163.65 = 155,278.70 : x
  2. Step 2: Convert to fraction form
    168,109.10/252,163.65 = 155,278.70/x
  3. Step 3: Cross multiply
    168,109.10x = 252,163.65 × 155,278.70
  4. Step 4: Simplify right side
    168,109.10x = 39,155,643,759.26
  5. Step 5: Solve for x
    x = 39,155,643,759.26/168,109.10
  6. Step 6: Final answer
    x = 232,918.05

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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.