Home / 190,201.74-262,478-109,628.72

Finding the Fourth Proportional to 190,201.74, 262,478 and 109,628.72

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Solution

The fourth proportional to 190,201.74, 262,478 and 109,628.72 is: 151,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,201.74 : 262,478 = 109,628.72 : x
  2. Step 2: Convert to fraction form
    190,201.74/262,478 = 109,628.72/x
  3. Step 3: Cross multiply
    190,201.74x = 262,478 × 109,628.72
  4. Step 4: Simplify right side
    190,201.74x = 28,775,127,168.16
  5. Step 5: Solve for x
    x = 28,775,127,168.16/190,201.74
  6. Step 6: Final answer
    x = 151,287.40

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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.