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Finding the Fourth Proportional to 129,903.35, 194,855.03 and 103,659.35

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Solution

The fourth proportional to 129,903.35, 194,855.03 and 103,659.35 is: 155,489.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,903.35 : 194,855.03 = 103,659.35 : x
  2. Step 2: Convert to fraction form
    129,903.35/194,855.03 = 103,659.35/x
  3. Step 3: Cross multiply
    129,903.35x = 194,855.03 × 103,659.35
  4. Step 4: Simplify right side
    129,903.35x = 20,198,545,754.03
  5. Step 5: Solve for x
    x = 20,198,545,754.03/129,903.35
  6. Step 6: Final answer
    x = 155,489.03

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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.