Home / 203,579.72-280,939.68-112,949.50

Finding the Fourth Proportional to 203,579.72, 280,939.68 and 112,949.50

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Solution

The fourth proportional to 203,579.72, 280,939.68 and 112,949.50 is: 155,870.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,579.72 : 280,939.68 = 112,949.50 : x
  2. Step 2: Convert to fraction form
    203,579.72/280,939.68 = 112,949.50/x
  3. Step 3: Cross multiply
    203,579.72x = 280,939.68 × 112,949.50
  4. Step 4: Simplify right side
    203,579.72x = 31,731,996,386.16
  5. Step 5: Solve for x
    x = 31,731,996,386.16/203,579.72
  6. Step 6: Final answer
    x = 155,870.12

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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.