Home / 148,872.90-205,442.11-80,890.92

Finding the Fourth Proportional to 148,872.90, 205,442.11 and 80,890.92

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Solution

The fourth proportional to 148,872.90, 205,442.11 and 80,890.92 is: 111,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,872.90 : 205,442.11 = 80,890.92 : x
  2. Step 2: Convert to fraction form
    148,872.90/205,442.11 = 80,890.92/x
  3. Step 3: Cross multiply
    148,872.90x = 205,442.11 × 80,890.92
  4. Step 4: Simplify right side
    148,872.90x = 16,618,401,284.64
  5. Step 5: Solve for x
    x = 16,618,401,284.64/148,872.90
  6. Step 6: Final answer
    x = 111,628.12

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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.