Home / 129,728.72-194,593.08-100,189.64

Finding the Fourth Proportional to 129,728.72, 194,593.08 and 100,189.64

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Solution

The fourth proportional to 129,728.72, 194,593.08 and 100,189.64 is: 150,284.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,728.72 : 194,593.08 = 100,189.64 : x
  2. Step 2: Convert to fraction form
    129,728.72/194,593.08 = 100,189.64/x
  3. Step 3: Cross multiply
    129,728.72x = 194,593.08 × 100,189.64
  4. Step 4: Simplify right side
    129,728.72x = 19,496,210,631.69
  5. Step 5: Solve for x
    x = 19,496,210,631.69/129,728.72
  6. Step 6: Final answer
    x = 150,284.46

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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.