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Finding the Fourth Proportional to 129,740.72, 194,611.08 and 100,201.64

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Solution

The fourth proportional to 129,740.72, 194,611.08 and 100,201.64 is: 150,302.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.72 : 194,611.08 = 100,201.64 : x
  2. Step 2: Convert to fraction form
    129,740.72/194,611.08 = 100,201.64/x
  3. Step 3: Cross multiply
    129,740.72x = 194,611.08 × 100,201.64
  4. Step 4: Simplify right side
    129,740.72x = 19,500,349,378.17
  5. Step 5: Solve for x
    x = 19,500,349,378.17/129,740.72
  6. Step 6: Final answer
    x = 150,302.46

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Similar ratio
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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.