Home / 128,022.40-192,033.60-112,470.40

Finding the Fourth Proportional to 128,022.40, 192,033.60 and 112,470.40

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Solution

The fourth proportional to 128,022.40, 192,033.60 and 112,470.40 is: 168,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,022.40 : 192,033.60 = 112,470.40 : x
  2. Step 2: Convert to fraction form
    128,022.40/192,033.60 = 112,470.40/x
  3. Step 3: Cross multiply
    128,022.40x = 192,033.60 × 112,470.40
  4. Step 4: Simplify right side
    128,022.40x = 21,598,095,805.44
  5. Step 5: Solve for x
    x = 21,598,095,805.44/128,022.40
  6. Step 6: Final answer
    x = 168,705.60

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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.