Home / 203,631.78-281,007.56-112,985.80

Finding the Fourth Proportional to 203,631.78, 281,007.56 and 112,985.80

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Solution

The fourth proportional to 203,631.78, 281,007.56 and 112,985.80 is: 155,918.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,631.78 : 281,007.56 = 112,985.80 : x
  2. Step 2: Convert to fraction form
    203,631.78/281,007.56 = 112,985.80/x
  3. Step 3: Cross multiply
    203,631.78x = 281,007.56 × 112,985.80
  4. Step 4: Simplify right side
    203,631.78x = 31,749,863,972.65
  5. Step 5: Solve for x
    x = 31,749,863,972.65/203,631.78
  6. Step 6: Final answer
    x = 155,918.02

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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.