Home / 112,418.32-155,121.60-109,394.32

Finding the Fourth Proportional to 112,418.32, 155,121.60 and 109,394.32

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Solution

The fourth proportional to 112,418.32, 155,121.60 and 109,394.32 is: 150,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,418.32 : 155,121.60 = 109,394.32 : x
  2. Step 2: Convert to fraction form
    112,418.32/155,121.60 = 109,394.32/x
  3. Step 3: Cross multiply
    112,418.32x = 155,121.60 × 109,394.32
  4. Step 4: Simplify right side
    112,418.32x = 16,969,421,949.31
  5. Step 5: Solve for x
    x = 16,969,421,949.31/112,418.32
  6. Step 6: Final answer
    x = 150,948.90

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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.