Home / 122,145,147.90-168,504,128.42-108,220,705.20

Finding the Fourth Proportional to 122,145,147.90, 168,504,128.42 and 108,220,705.20

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Solution

The fourth proportional to 122,145,147.90, 168,504,128.42 and 108,220,705.20 is: 149,294,801.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,145,147.90 : 168,504,128.42 = 108,220,705.20 : x
  2. Step 2: Convert to fraction form
    122,145,147.90/168,504,128.42 = 108,220,705.20/x
  3. Step 3: Cross multiply
    122,145,147.90x = 168,504,128.42 × 108,220,705.20
  4. Step 4: Simplify right side
    122,145,147.90x = 18,235,635,606,182,656
  5. Step 5: Solve for x
    x = 18,235,635,606,182,656/122,145,147.90
  6. Step 6: Final answer
    x = 149,294,801.47

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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.