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Finding the Fourth Proportional to 190,651.65, 262,989.97 and 118,907.12

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Solution

The fourth proportional to 190,651.65, 262,989.97 and 118,907.12 is: 164,023.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,651.65 : 262,989.97 = 118,907.12 : x
  2. Step 2: Convert to fraction form
    190,651.65/262,989.97 = 118,907.12/x
  3. Step 3: Cross multiply
    190,651.65x = 262,989.97 × 118,907.12
  4. Step 4: Simplify right side
    190,651.65x = 31,271,378,309.37
  5. Step 5: Solve for x
    x = 31,271,378,309.37/190,651.65
  6. Step 6: Final answer
    x = 164,023.64

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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.