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Finding the Fourth Proportional to 118,698.69, 177,990.93 and 39,757.71

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Solution

The fourth proportional to 118,698.69, 177,990.93 and 39,757.71 is: 59,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,698.69 : 177,990.93 = 39,757.71 : x
  2. Step 2: Convert to fraction form
    118,698.69/177,990.93 = 39,757.71/x
  3. Step 3: Cross multiply
    118,698.69x = 177,990.93 × 39,757.71
  4. Step 4: Simplify right side
    118,698.69x = 7,076,511,777.57
  5. Step 5: Solve for x
    x = 7,076,511,777.57/118,698.69
  6. Step 6: Final answer
    x = 59,617.44

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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.