Home / 106,421.40-146,739.60-79,518.60

Finding the Fourth Proportional to 106,421.40, 146,739.60 and 79,518.60

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Solution

The fourth proportional to 106,421.40, 146,739.60 and 79,518.60 is: 109,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,421.40 : 146,739.60 = 79,518.60 : x
  2. Step 2: Convert to fraction form
    106,421.40/146,739.60 = 79,518.60/x
  3. Step 3: Cross multiply
    106,421.40x = 146,739.60 × 79,518.60
  4. Step 4: Simplify right side
    106,421.40x = 11,668,527,556.56
  5. Step 5: Solve for x
    x = 11,668,527,556.56/106,421.40
  6. Step 6: Final answer
    x = 109,644.56

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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.