Home / 148,921.56-205,511.58-80,938.38

Finding the Fourth Proportional to 148,921.56, 205,511.58 and 80,938.38

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Solution

The fourth proportional to 148,921.56, 205,511.58 and 80,938.38 is: 111,694.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,921.56 : 205,511.58 = 80,938.38 : x
  2. Step 2: Convert to fraction form
    148,921.56/205,511.58 = 80,938.38/x
  3. Step 3: Cross multiply
    148,921.56x = 205,511.58 × 80,938.38
  4. Step 4: Simplify right side
    148,921.56x = 16,633,774,356.44
  5. Step 5: Solve for x
    x = 16,633,774,356.44/148,921.56
  6. Step 6: Final answer
    x = 111,694.87

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1.5x scale

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.