Home / 111,912.97-154,451.06-83,569.45

Finding the Fourth Proportional to 111,912.97, 154,451.06 and 83,569.45

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Solution

The fourth proportional to 111,912.97, 154,451.06 and 83,569.45 is: 115,334.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,912.97 : 154,451.06 = 83,569.45 : x
  2. Step 2: Convert to fraction form
    111,912.97/154,451.06 = 83,569.45/x
  3. Step 3: Cross multiply
    111,912.97x = 154,451.06 × 83,569.45
  4. Step 4: Simplify right side
    111,912.97x = 12,907,390,136.12
  5. Step 5: Solve for x
    x = 12,907,390,136.12/111,912.97
  6. Step 6: Final answer
    x = 115,334.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.