Home / 230,163.72-317,583.54-129,540.36

Finding the Fourth Proportional to 230,163.72, 317,583.54 and 129,540.36

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Solution

The fourth proportional to 230,163.72, 317,583.54 and 129,540.36 is: 178,741.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,163.72 : 317,583.54 = 129,540.36 : x
  2. Step 2: Convert to fraction form
    230,163.72/317,583.54 = 129,540.36/x
  3. Step 3: Cross multiply
    230,163.72x = 317,583.54 × 129,540.36
  4. Step 4: Simplify right side
    230,163.72x = 41,139,886,101.67
  5. Step 5: Solve for x
    x = 41,139,886,101.67/230,163.72
  6. Step 6: Final answer
    x = 178,741.84

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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.