Home / 138,216.19-190,797.20-92,920.45

Finding the Fourth Proportional to 138,216.19, 190,797.20 and 92,920.45

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Solution

The fourth proportional to 138,216.19, 190,797.20 and 92,920.45 is: 128,269.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,216.19 : 190,797.20 = 92,920.45 : x
  2. Step 2: Convert to fraction form
    138,216.19/190,797.20 = 92,920.45/x
  3. Step 3: Cross multiply
    138,216.19x = 190,797.20 × 92,920.45
  4. Step 4: Simplify right side
    138,216.19x = 17,728,961,682.74
  5. Step 5: Solve for x
    x = 17,728,961,682.74/138,216.19
  6. Step 6: Final answer
    x = 128,269.79

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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.