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Finding the Fourth Proportional to 268,096.40, 402,143.20 and 125,940.92

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Solution

The fourth proportional to 268,096.40, 402,143.20 and 125,940.92 is: 188,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,096.40 : 402,143.20 = 125,940.92 : x
  2. Step 2: Convert to fraction form
    268,096.40/402,143.20 = 125,940.92/x
  3. Step 3: Cross multiply
    268,096.40x = 402,143.20 × 125,940.92
  4. Step 4: Simplify right side
    268,096.40x = 50,646,284,579.74
  5. Step 5: Solve for x
    x = 50,646,284,579.74/268,096.40
  6. Step 6: Final answer
    x = 188,910.72

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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.