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Finding the Fourth Proportional to 118,083.62, 176,342.73 and 103,775.78

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Solution

The fourth proportional to 118,083.62, 176,342.73 and 103,775.78 is: 154,975.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,083.62 : 176,342.73 = 103,775.78 : x
  2. Step 2: Convert to fraction form
    118,083.62/176,342.73 = 103,775.78/x
  3. Step 3: Cross multiply
    118,083.62x = 176,342.73 × 103,775.78
  4. Step 4: Simplify right side
    118,083.62x = 18,300,104,353.08
  5. Step 5: Solve for x
    x = 18,300,104,353.08/118,083.62
  6. Step 6: Final answer
    x = 154,975.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.