Home / 98,021.10-146,703.60-86,211.30

Finding the Fourth Proportional to 98,021.10, 146,703.60 and 86,211.30

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Solution

The fourth proportional to 98,021.10, 146,703.60 and 86,211.30 is: 129,028.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,021.10 : 146,703.60 = 86,211.30 : x
  2. Step 2: Convert to fraction form
    98,021.10/146,703.60 = 86,211.30/x
  3. Step 3: Cross multiply
    98,021.10x = 146,703.60 × 86,211.30
  4. Step 4: Simplify right side
    98,021.10x = 12,647,508,070.68
  5. Step 5: Solve for x
    x = 12,647,508,070.68/98,021.10
  6. Step 6: Final answer
    x = 129,028.42

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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.