Home / 158,226.62-218,353.05-86,611.21

Finding the Fourth Proportional to 158,226.62, 218,353.05 and 86,611.21

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Solution

The fourth proportional to 158,226.62, 218,353.05 and 86,611.21 is: 119,523.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,226.62 : 218,353.05 = 86,611.21 : x
  2. Step 2: Convert to fraction form
    158,226.62/218,353.05 = 86,611.21/x
  3. Step 3: Cross multiply
    158,226.62x = 218,353.05 × 86,611.21
  4. Step 4: Simplify right side
    158,226.62x = 18,911,821,321.81
  5. Step 5: Solve for x
    x = 18,911,821,321.81/158,226.62
  6. Step 6: Final answer
    x = 119,523.64

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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.