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Finding the Fourth Proportional to 129,484.90, 194,227.80 and 35,990.56

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Solution

The fourth proportional to 129,484.90, 194,227.80 and 35,990.56 is: 53,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,484.90 : 194,227.80 = 35,990.56 : x
  2. Step 2: Convert to fraction form
    129,484.90/194,227.80 = 35,990.56/x
  3. Step 3: Cross multiply
    129,484.90x = 194,227.80 × 35,990.56
  4. Step 4: Simplify right side
    129,484.90x = 6,990,367,289.57
  5. Step 5: Solve for x
    x = 6,990,367,289.57/129,484.90
  6. Step 6: Final answer
    x = 53,985.97

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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.