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Finding the Fourth Proportional to 118,379.80, 177,561.60 and 38,416.60

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Solution

The fourth proportional to 118,379.80, 177,561.60 and 38,416.60 is: 57,622.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,379.80 : 177,561.60 = 38,416.60 : x
  2. Step 2: Convert to fraction form
    118,379.80/177,561.60 = 38,416.60/x
  3. Step 3: Cross multiply
    118,379.80x = 177,561.60 × 38,416.60
  4. Step 4: Simplify right side
    118,379.80x = 6,821,312,962.56
  5. Step 5: Solve for x
    x = 6,821,312,962.56/118,379.80
  6. Step 6: Final answer
    x = 57,622.27

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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.