Home / 189,712.20-261,778.86-104,829.60

Finding the Fourth Proportional to 189,712.20, 261,778.86 and 104,829.60

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Solution

The fourth proportional to 189,712.20, 261,778.86 and 104,829.60 is: 144,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,712.20 : 261,778.86 = 104,829.60 : x
  2. Step 2: Convert to fraction form
    189,712.20/261,778.86 = 104,829.60/x
  3. Step 3: Cross multiply
    189,712.20x = 261,778.86 × 104,829.60
  4. Step 4: Simplify right side
    189,712.20x = 27,442,173,182.26
  5. Step 5: Solve for x
    x = 27,442,173,182.26/189,712.20
  6. Step 6: Final answer
    x = 144,651.60

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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.