Home / 190,121.60-262,374-109,542.88

Finding the Fourth Proportional to 190,121.60, 262,374 and 109,542.88

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Solution

The fourth proportional to 190,121.60, 262,374 and 109,542.88 is: 151,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,121.60 : 262,374 = 109,542.88 : x
  2. Step 2: Convert to fraction form
    190,121.60/262,374 = 109,542.88/x
  3. Step 3: Cross multiply
    190,121.60x = 262,374 × 109,542.88
  4. Step 4: Simplify right side
    190,121.60x = 28,741,203,597.12
  5. Step 5: Solve for x
    x = 28,741,203,597.12/190,121.60
  6. Step 6: Final answer
    x = 151,172.74

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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.