Home / 158,485.51-218,728.25-90,512.18

Finding the Fourth Proportional to 158,485.51, 218,728.25 and 90,512.18

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Solution

The fourth proportional to 158,485.51, 218,728.25 and 90,512.18 is: 124,917.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,485.51 : 218,728.25 = 90,512.18 : x
  2. Step 2: Convert to fraction form
    158,485.51/218,728.25 = 90,512.18/x
  3. Step 3: Cross multiply
    158,485.51x = 218,728.25 × 90,512.18
  4. Step 4: Simplify right side
    158,485.51x = 19,797,571,578.88
  5. Step 5: Solve for x
    x = 19,797,571,578.88/158,485.51
  6. Step 6: Final answer
    x = 124,917.23

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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.