Home / 128,865.12-193,226.16-44,580

Finding the Fourth Proportional to 128,865.12, 193,226.16 and 44,580

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Solution

The fourth proportional to 128,865.12, 193,226.16 and 44,580 is: 66,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,865.12 : 193,226.16 = 44,580 : x
  2. Step 2: Convert to fraction form
    128,865.12/193,226.16 = 44,580/x
  3. Step 3: Cross multiply
    128,865.12x = 193,226.16 × 44,580
  4. Step 4: Simplify right side
    128,865.12x = 8,614,022,212.80
  5. Step 5: Solve for x
    x = 8,614,022,212.80/128,865.12
  6. Step 6: Final answer
    x = 66,845.26

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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.