Home / 196,390.88-271,021.24-111,509.76

Finding the Fourth Proportional to 196,390.88, 271,021.24 and 111,509.76

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Solution

The fourth proportional to 196,390.88, 271,021.24 and 111,509.76 is: 153,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,390.88 : 271,021.24 = 111,509.76 : x
  2. Step 2: Convert to fraction form
    196,390.88/271,021.24 = 111,509.76/x
  3. Step 3: Cross multiply
    196,390.88x = 271,021.24 × 111,509.76
  4. Step 4: Simplify right side
    196,390.88x = 30,221,513,427.30
  5. Step 5: Solve for x
    x = 30,221,513,427.30/196,390.88
  6. Step 6: Final answer
    x = 153,884.51

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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.