Home / 128,418.57-192,366.74-104,810.25

Finding the Fourth Proportional to 128,418.57, 192,366.74 and 104,810.25

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Solution

The fourth proportional to 128,418.57, 192,366.74 and 104,810.25 is: 157,002.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,418.57 : 192,366.74 = 104,810.25 : x
  2. Step 2: Convert to fraction form
    128,418.57/192,366.74 = 104,810.25/x
  3. Step 3: Cross multiply
    128,418.57x = 192,366.74 × 104,810.25
  4. Step 4: Simplify right side
    128,418.57x = 20,162,005,587.03
  5. Step 5: Solve for x
    x = 20,162,005,587.03/128,418.57
  6. Step 6: Final answer
    x = 157,002.26

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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.