Home / 111,786.36-154,403.61-81,110.23

Finding the Fourth Proportional to 111,786.36, 154,403.61 and 81,110.23

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Solution

The fourth proportional to 111,786.36, 154,403.61 and 81,110.23 is: 112,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,786.36 : 154,403.61 = 81,110.23 : x
  2. Step 2: Convert to fraction form
    111,786.36/154,403.61 = 81,110.23/x
  3. Step 3: Cross multiply
    111,786.36x = 154,403.61 × 81,110.23
  4. Step 4: Simplify right side
    111,786.36x = 12,523,712,314.13
  5. Step 5: Solve for x
    x = 12,523,712,314.13/111,786.36
  6. Step 6: Final answer
    x = 112,032.57

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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.