Home / 112,899.24-155,802-61,912.44

Finding the Fourth Proportional to 112,899.24, 155,802 and 61,912.44

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Solution

The fourth proportional to 112,899.24, 155,802 and 61,912.44 is: 85,439.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,899.24 : 155,802 = 61,912.44 : x
  2. Step 2: Convert to fraction form
    112,899.24/155,802 = 61,912.44/x
  3. Step 3: Cross multiply
    112,899.24x = 155,802 × 61,912.44
  4. Step 4: Simplify right side
    112,899.24x = 9,646,081,976.88
  5. Step 5: Solve for x
    x = 9,646,081,976.88/112,899.24
  6. Step 6: Final answer
    x = 85,439.74

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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.