Home / 128,148.42-192,189.36-38,170.08

Finding the Fourth Proportional to 128,148.42, 192,189.36 and 38,170.08

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Solution

The fourth proportional to 128,148.42, 192,189.36 and 38,170.08 is: 57,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,148.42 : 192,189.36 = 38,170.08 : x
  2. Step 2: Convert to fraction form
    128,148.42/192,189.36 = 38,170.08/x
  3. Step 3: Cross multiply
    128,148.42x = 192,189.36 × 38,170.08
  4. Step 4: Simplify right side
    128,148.42x = 7,335,883,246.35
  5. Step 5: Solve for x
    x = 7,335,883,246.35/128,148.42
  6. Step 6: Final answer
    x = 57,245.21

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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.