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Finding the Fourth Proportional to 136,629.69, 204,911.46 and 70,035.54

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Solution

The fourth proportional to 136,629.69, 204,911.46 and 70,035.54 is: 105,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,629.69 : 204,911.46 = 70,035.54 : x
  2. Step 2: Convert to fraction form
    136,629.69/204,911.46 = 70,035.54/x
  3. Step 3: Cross multiply
    136,629.69x = 204,911.46 × 70,035.54
  4. Step 4: Simplify right side
    136,629.69x = 14,351,084,753.29
  5. Step 5: Solve for x
    x = 14,351,084,753.29/136,629.69
  6. Step 6: Final answer
    x = 105,036.36

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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.