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Finding the Fourth Proportional to 129,718.10, 194,249.10 and 103,474.10

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Solution

The fourth proportional to 129,718.10, 194,249.10 and 103,474.10 is: 154,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,718.10 : 194,249.10 = 103,474.10 : x
  2. Step 2: Convert to fraction form
    129,718.10/194,249.10 = 103,474.10/x
  3. Step 3: Cross multiply
    129,718.10x = 194,249.10 × 103,474.10
  4. Step 4: Simplify right side
    129,718.10x = 20,099,750,798.31
  5. Step 5: Solve for x
    x = 20,099,750,798.31/129,718.10
  6. Step 6: Final answer
    x = 154,949.47

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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.