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Finding the Fourth Proportional to 129,908.35, 194,862.53 and 103,664.35

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Solution

The fourth proportional to 129,908.35, 194,862.53 and 103,664.35 is: 155,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,908.35 : 194,862.53 = 103,664.35 : x
  2. Step 2: Convert to fraction form
    129,908.35/194,862.53 = 103,664.35/x
  3. Step 3: Cross multiply
    129,908.35x = 194,862.53 × 103,664.35
  4. Step 4: Simplify right side
    129,908.35x = 20,200,297,511.81
  5. Step 5: Solve for x
    x = 20,200,297,511.81/129,908.35
  6. Step 6: Final answer
    x = 155,496.53

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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.