Home / 111,538.26-153,855.18-66,186.36

Finding the Fourth Proportional to 111,538.26, 153,855.18 and 66,186.36

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Solution

The fourth proportional to 111,538.26, 153,855.18 and 66,186.36 is: 91,297.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,538.26 : 153,855.18 = 66,186.36 : x
  2. Step 2: Convert to fraction form
    111,538.26/153,855.18 = 66,186.36/x
  3. Step 3: Cross multiply
    111,538.26x = 153,855.18 × 66,186.36
  4. Step 4: Simplify right side
    111,538.26x = 10,183,114,331.34
  5. Step 5: Solve for x
    x = 10,183,114,331.34/111,538.26
  6. Step 6: Final answer
    x = 91,297.05

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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.