Home / 112,879.20-155,775.06-61,896.60

Finding the Fourth Proportional to 112,879.20, 155,775.06 and 61,896.60

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Solution

The fourth proportional to 112,879.20, 155,775.06 and 61,896.60 is: 85,418.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,879.20 : 155,775.06 = 61,896.60 : x
  2. Step 2: Convert to fraction form
    112,879.20/155,775.06 = 61,896.60/x
  3. Step 3: Cross multiply
    112,879.20x = 155,775.06 × 61,896.60
  4. Step 4: Simplify right side
    112,879.20x = 9,641,946,578.80
  5. Step 5: Solve for x
    x = 9,641,946,578.80/112,879.20
  6. Step 6: Final answer
    x = 85,418.28

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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.