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Finding the Fourth Proportional to 175,608.54, 242,137.78 and 129,734.57

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Solution

The fourth proportional to 175,608.54, 242,137.78 and 129,734.57 is: 178,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,608.54 : 242,137.78 = 129,734.57 : x
  2. Step 2: Convert to fraction form
    175,608.54/242,137.78 = 129,734.57/x
  3. Step 3: Cross multiply
    175,608.54x = 242,137.78 × 129,734.57
  4. Step 4: Simplify right side
    175,608.54x = 31,413,641,050.06
  5. Step 5: Solve for x
    x = 31,413,641,050.06/175,608.54
  6. Step 6: Final answer
    x = 178,884.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.