Home / 197,231.72-272,113.28-112,288.64

Finding the Fourth Proportional to 197,231.72, 272,113.28 and 112,288.64

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Solution

The fourth proportional to 197,231.72, 272,113.28 and 112,288.64 is: 154,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,231.72 : 272,113.28 = 112,288.64 : x
  2. Step 2: Convert to fraction form
    197,231.72/272,113.28 = 112,288.64/x
  3. Step 3: Cross multiply
    197,231.72x = 272,113.28 × 112,288.64
  4. Step 4: Simplify right side
    197,231.72x = 30,555,230,137.14
  5. Step 5: Solve for x
    x = 30,555,230,137.14/197,231.72
  6. Step 6: Final answer
    x = 154,920.47

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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.