Home / 271,913.50-407,911.62-138,721.02

Finding the Fourth Proportional to 271,913.50, 407,911.62 and 138,721.02

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Solution

The fourth proportional to 271,913.50, 407,911.62 and 138,721.02 is: 208,102.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,913.50 : 407,911.62 = 138,721.02 : x
  2. Step 2: Convert to fraction form
    271,913.50/407,911.62 = 138,721.02/x
  3. Step 3: Cross multiply
    271,913.50x = 407,911.62 × 138,721.02
  4. Step 4: Simplify right side
    271,913.50x = 56,585,915,996.25
  5. Step 5: Solve for x
    x = 56,585,915,996.25/271,913.50
  6. Step 6: Final answer
    x = 208,102.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.