Home / 203,579.70-280,939.74-112,949.40

Finding the Fourth Proportional to 203,579.70, 280,939.74 and 112,949.40

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Solution

The fourth proportional to 203,579.70, 280,939.74 and 112,949.40 is: 155,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,579.70 : 280,939.74 = 112,949.40 : x
  2. Step 2: Convert to fraction form
    203,579.70/280,939.74 = 112,949.40/x
  3. Step 3: Cross multiply
    203,579.70x = 280,939.74 × 112,949.40
  4. Step 4: Simplify right side
    203,579.70x = 31,731,975,069.16
  5. Step 5: Solve for x
    x = 31,731,975,069.16/203,579.70
  6. Step 6: Final answer
    x = 155,870.04

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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.