Home / 220,709.04-304,579.80-120,107.76

Finding the Fourth Proportional to 220,709.04, 304,579.80 and 120,107.76

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Solution

The fourth proportional to 220,709.04, 304,579.80 and 120,107.76 is: 165,749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,709.04 : 304,579.80 = 120,107.76 : x
  2. Step 2: Convert to fraction form
    220,709.04/304,579.80 = 120,107.76/x
  3. Step 3: Cross multiply
    220,709.04x = 304,579.80 × 120,107.76
  4. Step 4: Simplify right side
    220,709.04x = 36,582,397,519.25
  5. Step 5: Solve for x
    x = 36,582,397,519.25/220,709.04
  6. Step 6: Final answer
    x = 165,749.43

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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.