Home / 111,431.56-153,753.62-66,101.08

Finding the Fourth Proportional to 111,431.56, 153,753.62 and 66,101.08

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Solution

The fourth proportional to 111,431.56, 153,753.62 and 66,101.08 is: 91,206.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,431.56 : 153,753.62 = 66,101.08 : x
  2. Step 2: Convert to fraction form
    111,431.56/153,753.62 = 66,101.08/x
  3. Step 3: Cross multiply
    111,431.56x = 153,753.62 × 66,101.08
  4. Step 4: Simplify right side
    111,431.56x = 10,163,280,335.91
  5. Step 5: Solve for x
    x = 10,163,280,335.91/111,431.56
  6. Step 6: Final answer
    x = 91,206.48

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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.