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Finding the Fourth Proportional to 129,930.47, 194,738.74 and 63,270.71

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Solution

The fourth proportional to 129,930.47, 194,738.74 and 63,270.71 is: 94,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,930.47 : 194,738.74 = 63,270.71 : x
  2. Step 2: Convert to fraction form
    129,930.47/194,738.74 = 63,270.71/x
  3. Step 3: Cross multiply
    129,930.47x = 194,738.74 × 63,270.71
  4. Step 4: Simplify right side
    129,930.47x = 12,321,258,344.31
  5. Step 5: Solve for x
    x = 12,321,258,344.31/129,930.47
  6. Step 6: Final answer
    x = 94,829.63

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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.