Home / 196,355.28-270,981.12-115,830

Finding the Fourth Proportional to 196,355.28, 270,981.12 and 115,830

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Solution

The fourth proportional to 196,355.28, 270,981.12 and 115,830 is: 159,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,355.28 : 270,981.12 = 115,830 : x
  2. Step 2: Convert to fraction form
    196,355.28/270,981.12 = 115,830/x
  3. Step 3: Cross multiply
    196,355.28x = 270,981.12 × 115,830
  4. Step 4: Simplify right side
    196,355.28x = 31,387,743,129.60
  5. Step 5: Solve for x
    x = 31,387,743,129.60/196,355.28
  6. Step 6: Final answer
    x = 159,851.79

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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.