Home / 221,091.96-331,556.35-78,899.20

Finding the Fourth Proportional to 221,091.96, 331,556.35 and 78,899.20

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Solution

The fourth proportional to 221,091.96, 331,556.35 and 78,899.20 is: 118,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,091.96 : 331,556.35 = 78,899.20 : x
  2. Step 2: Convert to fraction form
    221,091.96/331,556.35 = 78,899.20/x
  3. Step 3: Cross multiply
    221,091.96x = 331,556.35 × 78,899.20
  4. Step 4: Simplify right side
    221,091.96x = 26,159,529,053.65
  5. Step 5: Solve for x
    x = 26,159,529,053.65/221,091.96
  6. Step 6: Final answer
    x = 118,319.68

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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.