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Finding the Fourth Proportional to 129,955.79, 194,957.99 and 41,185.46

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Solution

The fourth proportional to 129,955.79, 194,957.99 and 41,185.46 is: 61,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,955.79 : 194,957.99 = 41,185.46 : x
  2. Step 2: Convert to fraction form
    129,955.79/194,957.99 = 41,185.46/x
  3. Step 3: Cross multiply
    129,955.79x = 194,957.99 × 41,185.46
  4. Step 4: Simplify right side
    129,955.79x = 8,029,435,089.18
  5. Step 5: Solve for x
    x = 8,029,435,089.18/129,955.79
  6. Step 6: Final answer
    x = 61,785.90

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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.