Home / 148,120.90-204,406.27-80,137.64

Finding the Fourth Proportional to 148,120.90, 204,406.27 and 80,137.64

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Solution

The fourth proportional to 148,120.90, 204,406.27 and 80,137.64 is: 110,589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,120.90 : 204,406.27 = 80,137.64 : x
  2. Step 2: Convert to fraction form
    148,120.90/204,406.27 = 80,137.64/x
  3. Step 3: Cross multiply
    148,120.90x = 204,406.27 × 80,137.64
  4. Step 4: Simplify right side
    148,120.90x = 16,380,636,389.67
  5. Step 5: Solve for x
    x = 16,380,636,389.67/148,120.90
  6. Step 6: Final answer
    x = 110,589.64

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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.