Home / 235,845.12-353,656.32-85,979.52

Finding the Fourth Proportional to 235,845.12, 353,656.32 and 85,979.52

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Solution

The fourth proportional to 235,845.12, 353,656.32 and 85,979.52 is: 128,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,845.12 : 353,656.32 = 85,979.52 : x
  2. Step 2: Convert to fraction form
    235,845.12/353,656.32 = 85,979.52/x
  3. Step 3: Cross multiply
    235,845.12x = 353,656.32 × 85,979.52
  4. Step 4: Simplify right side
    235,845.12x = 30,407,200,638.57
  5. Step 5: Solve for x
    x = 30,407,200,638.57/235,845.12
  6. Step 6: Final answer
    x = 128,928.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.