Home / 128,258.44-192,304.73-69,136.54

Finding the Fourth Proportional to 128,258.44, 192,304.73 and 69,136.54

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Solution

The fourth proportional to 128,258.44, 192,304.73 and 69,136.54 is: 103,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,258.44 : 192,304.73 = 69,136.54 : x
  2. Step 2: Convert to fraction form
    128,258.44/192,304.73 = 69,136.54/x
  3. Step 3: Cross multiply
    128,258.44x = 192,304.73 × 69,136.54
  4. Step 4: Simplify right side
    128,258.44x = 13,295,283,349.91
  5. Step 5: Solve for x
    x = 13,295,283,349.91/128,258.44
  6. Step 6: Final answer
    x = 103,660.11

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1.5x scale

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.