Home / 138,215.19-190,795.82-92,919.45

Finding the Fourth Proportional to 138,215.19, 190,795.82 and 92,919.45

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Solution

The fourth proportional to 138,215.19, 190,795.82 and 92,919.45 is: 128,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,215.19 : 190,795.82 = 92,919.45 : x
  2. Step 2: Convert to fraction form
    138,215.19/190,795.82 = 92,919.45/x
  3. Step 3: Cross multiply
    138,215.19x = 190,795.82 × 92,919.45
  4. Step 4: Simplify right side
    138,215.19x = 17,728,641,529.03
  5. Step 5: Solve for x
    x = 17,728,641,529.03/138,215.19
  6. Step 6: Final answer
    x = 128,268.40

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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.