Home / 197,138.71-272,051.15-112,255.77

Finding the Fourth Proportional to 197,138.71, 272,051.15 and 112,255.77

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Solution

The fourth proportional to 197,138.71, 272,051.15 and 112,255.77 is: 154,912.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,138.71 : 272,051.15 = 112,255.77 : x
  2. Step 2: Convert to fraction form
    197,138.71/272,051.15 = 112,255.77/x
  3. Step 3: Cross multiply
    197,138.71x = 272,051.15 × 112,255.77
  4. Step 4: Simplify right side
    197,138.71x = 30,539,311,322.64
  5. Step 5: Solve for x
    x = 30,539,311,322.64/197,138.71
  6. Step 6: Final answer
    x = 154,912.81

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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.