Home / 138,205.73-190,628.46-84,517.16

Finding the Fourth Proportional to 138,205.73, 190,628.46 and 84,517.16

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Solution

The fourth proportional to 138,205.73, 190,628.46 and 84,517.16 is: 116,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,205.73 : 190,628.46 = 84,517.16 : x
  2. Step 2: Convert to fraction form
    138,205.73/190,628.46 = 84,517.16/x
  3. Step 3: Cross multiply
    138,205.73x = 190,628.46 × 84,517.16
  4. Step 4: Simplify right side
    138,205.73x = 16,111,376,054.37
  5. Step 5: Solve for x
    x = 16,111,376,054.37/138,205.73
  6. Step 6: Final answer
    x = 116,575.31

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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.