Home / 158,087.80-218,166.78-90,115.03

Finding the Fourth Proportional to 158,087.80, 218,166.78 and 90,115.03

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Solution

The fourth proportional to 158,087.80, 218,166.78 and 90,115.03 is: 124,361.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,087.80 : 218,166.78 = 90,115.03 : x
  2. Step 2: Convert to fraction form
    158,087.80/218,166.78 = 90,115.03/x
  3. Step 3: Cross multiply
    158,087.80x = 218,166.78 × 90,115.03
  4. Step 4: Simplify right side
    158,087.80x = 19,660,105,924.70
  5. Step 5: Solve for x
    x = 19,660,105,924.70/158,087.80
  6. Step 6: Final answer
    x = 124,361.94

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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.