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Finding the Fourth Proportional to 170,528.12, 255,924.12 and 137,329.64

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Solution

The fourth proportional to 170,528.12, 255,924.12 and 137,329.64 is: 206,100.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,528.12 : 255,924.12 = 137,329.64 : x
  2. Step 2: Convert to fraction form
    170,528.12/255,924.12 = 137,329.64/x
  3. Step 3: Cross multiply
    170,528.12x = 255,924.12 × 137,329.64
  4. Step 4: Simplify right side
    170,528.12x = 35,145,967,266.92
  5. Step 5: Solve for x
    x = 35,145,967,266.92/170,528.12
  6. Step 6: Final answer
    x = 206,100.71

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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.