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Finding the Fourth Proportional to 118,915.52, 178,450.43 and 51,513.39

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Solution

The fourth proportional to 118,915.52, 178,450.43 and 51,513.39 is: 77,303.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,915.52 : 178,450.43 = 51,513.39 : x
  2. Step 2: Convert to fraction form
    118,915.52/178,450.43 = 51,513.39/x
  3. Step 3: Cross multiply
    118,915.52x = 178,450.43 × 51,513.39
  4. Step 4: Simplify right side
    118,915.52x = 9,192,586,338.69
  5. Step 5: Solve for x
    x = 9,192,586,338.69/118,915.52
  6. Step 6: Final answer
    x = 77,303.51

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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.