Home / 345,879.52-518,835.18-105,976.24

Finding the Fourth Proportional to 345,879.52, 518,835.18 and 105,976.24

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Solution

The fourth proportional to 345,879.52, 518,835.18 and 105,976.24 is: 158,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,879.52 : 518,835.18 = 105,976.24 : x
  2. Step 2: Convert to fraction form
    345,879.52/518,835.18 = 105,976.24/x
  3. Step 3: Cross multiply
    345,879.52x = 518,835.18 × 105,976.24
  4. Step 4: Simplify right side
    345,879.52x = 54,984,201,556.12
  5. Step 5: Solve for x
    x = 54,984,201,556.12/345,879.52
  6. Step 6: Final answer
    x = 158,969.23

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1.5x scale

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.