Home / 213,162,728.09-294,041,802.96-128,330,840.67

Finding the Fourth Proportional to 213,162,728.09, 294,041,802.96 and 128,330,840.67

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Solution

The fourth proportional to 213,162,728.09, 294,041,802.96 and 128,330,840.67 is: 177,022,653.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,162,728.09 : 294,041,802.96 = 128,330,840.67 : x
  2. Step 2: Convert to fraction form
    213,162,728.09/294,041,802.96 = 128,330,840.67/x
  3. Step 3: Cross multiply
    213,162,728.09x = 294,041,802.96 × 128,330,840.67
  4. Step 4: Simplify right side
    213,162,728.09x = 37,734,631,765,979,296
  5. Step 5: Solve for x
    x = 37,734,631,765,979,296/213,162,728.09
  6. Step 6: Final answer
    x = 177,022,653.56

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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.