Home / 191,815.52-264,739.92-120,257.60

Finding the Fourth Proportional to 191,815.52, 264,739.92 and 120,257.60

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Solution

The fourth proportional to 191,815.52, 264,739.92 and 120,257.60 is: 165,977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,815.52 : 264,739.92 = 120,257.60 : x
  2. Step 2: Convert to fraction form
    191,815.52/264,739.92 = 120,257.60/x
  3. Step 3: Cross multiply
    191,815.52x = 264,739.92 × 120,257.60
  4. Step 4: Simplify right side
    191,815.52x = 31,836,987,403.39
  5. Step 5: Solve for x
    x = 31,836,987,403.39/191,815.52
  6. Step 6: Final answer
    x = 165,977.12

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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.