Home / 129,869.87-194,824.29-45,615.19

Finding the Fourth Proportional to 129,869.87, 194,824.29 and 45,615.19

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Solution

The fourth proportional to 129,869.87, 194,824.29 and 45,615.19 is: 68,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,869.87 : 194,824.29 = 45,615.19 : x
  2. Step 2: Convert to fraction form
    129,869.87/194,824.29 = 45,615.19/x
  3. Step 3: Cross multiply
    129,869.87x = 194,824.29 × 45,615.19
  4. Step 4: Simplify right side
    129,869.87x = 8,886,946,517.90
  5. Step 5: Solve for x
    x = 8,886,946,517.90/129,869.87
  6. Step 6: Final answer
    x = 68,429.62

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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.