Home / 111,431.30-153,735.17-66,074.13

Finding the Fourth Proportional to 111,431.30, 153,735.17 and 66,074.13

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Solution

The fourth proportional to 111,431.30, 153,735.17 and 66,074.13 is: 91,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,431.30 : 153,735.17 = 66,074.13 : x
  2. Step 2: Convert to fraction form
    111,431.30/153,735.17 = 66,074.13/x
  3. Step 3: Cross multiply
    111,431.30x = 153,735.17 × 66,074.13
  4. Step 4: Simplify right side
    111,431.30x = 10,157,917,277.78
  5. Step 5: Solve for x
    x = 10,157,917,277.78/111,431.30
  6. Step 6: Final answer
    x = 91,158.57

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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.