Home / 158,198.62-218,338.60-90,215.72

Finding the Fourth Proportional to 158,198.62, 218,338.60 and 90,215.72

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Solution

The fourth proportional to 158,198.62, 218,338.60 and 90,215.72 is: 124,511.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,198.62 : 218,338.60 = 90,215.72 : x
  2. Step 2: Convert to fraction form
    158,198.62/218,338.60 = 90,215.72/x
  3. Step 3: Cross multiply
    158,198.62x = 218,338.60 × 90,215.72
  4. Step 4: Simplify right side
    158,198.62x = 19,697,574,002.79
  5. Step 5: Solve for x
    x = 19,697,574,002.79/158,198.62
  6. Step 6: Final answer
    x = 124,511.67

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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.