Home / 111,571.02-153,980.60-66,260.03

Finding the Fourth Proportional to 111,571.02, 153,980.60 and 66,260.03

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Solution

The fourth proportional to 111,571.02, 153,980.60 and 66,260.03 is: 91,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,571.02 : 153,980.60 = 66,260.03 : x
  2. Step 2: Convert to fraction form
    111,571.02/153,980.60 = 66,260.03/x
  3. Step 3: Cross multiply
    111,571.02x = 153,980.60 × 66,260.03
  4. Step 4: Simplify right side
    111,571.02x = 10,202,758,074.21
  5. Step 5: Solve for x
    x = 10,202,758,074.21/111,571.02
  6. Step 6: Final answer
    x = 91,446.31

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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.