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Finding the Fourth Proportional to 148,603.55, 205,072.97 and 80,620.50

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Solution

The fourth proportional to 148,603.55, 205,072.97 and 80,620.50 is: 111,256.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,603.55 : 205,072.97 = 80,620.50 : x
  2. Step 2: Convert to fraction form
    148,603.55/205,072.97 = 80,620.50/x
  3. Step 3: Cross multiply
    148,603.55x = 205,072.97 × 80,620.50
  4. Step 4: Simplify right side
    148,603.55x = 16,533,084,590.27
  5. Step 5: Solve for x
    x = 16,533,084,590.27/148,603.55
  6. Step 6: Final answer
    x = 111,256.33

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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.