Home / 148,078.86-204,286.20-90,740.58

Finding the Fourth Proportional to 148,078.86, 204,286.20 and 90,740.58

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Solution

The fourth proportional to 148,078.86, 204,286.20 and 90,740.58 is: 125,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,078.86 : 204,286.20 = 90,740.58 : x
  2. Step 2: Convert to fraction form
    148,078.86/204,286.20 = 90,740.58/x
  3. Step 3: Cross multiply
    148,078.86x = 204,286.20 × 90,740.58
  4. Step 4: Simplify right side
    148,078.86x = 18,537,048,274.00
  5. Step 5: Solve for x
    x = 18,537,048,274.00/148,078.86
  6. Step 6: Final answer
    x = 125,183.62

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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.