Home / 112,021.65-154,485.99-81,759.03

Finding the Fourth Proportional to 112,021.65, 154,485.99 and 81,759.03

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Solution

The fourth proportional to 112,021.65, 154,485.99 and 81,759.03 is: 112,751.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,021.65 : 154,485.99 = 81,759.03 : x
  2. Step 2: Convert to fraction form
    112,021.65/154,485.99 = 81,759.03/x
  3. Step 3: Cross multiply
    112,021.65x = 154,485.99 × 81,759.03
  4. Step 4: Simplify right side
    112,021.65x = 12,630,624,690.99
  5. Step 5: Solve for x
    x = 12,630,624,690.99/112,021.65
  6. Step 6: Final answer
    x = 112,751.64

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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.