Home / 197,120.13-272,074.37-112,287.21

Finding the Fourth Proportional to 197,120.13, 272,074.37 and 112,287.21

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Solution

The fourth proportional to 197,120.13, 272,074.37 and 112,287.21 is: 154,984.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,120.13 : 272,074.37 = 112,287.21 : x
  2. Step 2: Convert to fraction form
    197,120.13/272,074.37 = 112,287.21/x
  3. Step 3: Cross multiply
    197,120.13x = 272,074.37 × 112,287.21
  4. Step 4: Simplify right side
    197,120.13x = 30,550,471,919.81
  5. Step 5: Solve for x
    x = 30,550,471,919.81/197,120.13
  6. Step 6: Final answer
    x = 154,984.03

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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.