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Finding the Fourth Proportional to 129,493.67, 194,240.23 and 40,754.93

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Solution

The fourth proportional to 129,493.67, 194,240.23 and 40,754.93 is: 61,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,493.67 : 194,240.23 = 40,754.93 : x
  2. Step 2: Convert to fraction form
    129,493.67/194,240.23 = 40,754.93/x
  3. Step 3: Cross multiply
    129,493.67x = 194,240.23 × 40,754.93
  4. Step 4: Simplify right side
    129,493.67x = 7,916,245,903.75
  5. Step 5: Solve for x
    x = 7,916,245,903.75/129,493.67
  6. Step 6: Final answer
    x = 61,132.30

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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.