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Finding the Fourth Proportional to 133,480.70, 199,929.45 and 103,664.60

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Solution

The fourth proportional to 133,480.70, 199,929.45 and 103,664.60 is: 155,270.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,480.70 : 199,929.45 = 103,664.60 : x
  2. Step 2: Convert to fraction form
    133,480.70/199,929.45 = 103,664.60/x
  3. Step 3: Cross multiply
    133,480.70x = 199,929.45 × 103,664.60
  4. Step 4: Simplify right side
    133,480.70x = 20,725,606,462.47
  5. Step 5: Solve for x
    x = 20,725,606,462.47/133,480.70
  6. Step 6: Final answer
    x = 155,270.44

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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.