Home / 128,258.82-192,284.46-53,435.21

Finding the Fourth Proportional to 128,258.82, 192,284.46 and 53,435.21

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Solution

The fourth proportional to 128,258.82, 192,284.46 and 53,435.21 is: 80,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,258.82 : 192,284.46 = 53,435.21 : x
  2. Step 2: Convert to fraction form
    128,258.82/192,284.46 = 53,435.21/x
  3. Step 3: Cross multiply
    128,258.82x = 192,284.46 × 53,435.21
  4. Step 4: Simplify right side
    128,258.82x = 10,274,759,538.41
  5. Step 5: Solve for x
    x = 10,274,759,538.41/128,258.82
  6. Step 6: Final answer
    x = 80,109.57

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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.