Home / 105,512.25-158,268.38-31,640.25

Finding the Fourth Proportional to 105,512.25, 158,268.38 and 31,640.25

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Solution

The fourth proportional to 105,512.25, 158,268.38 and 31,640.25 is: 47,460.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,512.25 : 158,268.38 = 31,640.25 : x
  2. Step 2: Convert to fraction form
    105,512.25/158,268.38 = 31,640.25/x
  3. Step 3: Cross multiply
    105,512.25x = 158,268.38 × 31,640.25
  4. Step 4: Simplify right side
    105,512.25x = 5,007,650,952.09
  5. Step 5: Solve for x
    x = 5,007,650,952.09/105,512.25
  6. Step 6: Final answer
    x = 47,460.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.