Home / 111,561.36-153,903.13-66,213.60

Finding the Fourth Proportional to 111,561.36, 153,903.13 and 66,213.60

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Solution

The fourth proportional to 111,561.36, 153,903.13 and 66,213.60 is: 91,344.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,561.36 : 153,903.13 = 66,213.60 : x
  2. Step 2: Convert to fraction form
    111,561.36/153,903.13 = 66,213.60/x
  3. Step 3: Cross multiply
    111,561.36x = 153,903.13 × 66,213.60
  4. Step 4: Simplify right side
    111,561.36x = 10,190,480,288.57
  5. Step 5: Solve for x
    x = 10,190,480,288.57/111,561.36
  6. Step 6: Final answer
    x = 91,344.17

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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.