Home / 111,512.54-153,887.51-66,199.60

Finding the Fourth Proportional to 111,512.54, 153,887.51 and 66,199.60

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Solution

The fourth proportional to 111,512.54, 153,887.51 and 66,199.60 is: 91,355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,512.54 : 153,887.51 = 66,199.60 : x
  2. Step 2: Convert to fraction form
    111,512.54/153,887.51 = 66,199.60/x
  3. Step 3: Cross multiply
    111,512.54x = 153,887.51 × 66,199.60
  4. Step 4: Simplify right side
    111,512.54x = 10,187,291,607.00
  5. Step 5: Solve for x
    x = 10,187,291,607.00/111,512.54
  6. Step 6: Final answer
    x = 91,355.57

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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.