Home / 118,272.20-177,116.70-78,614.60

Finding the Fourth Proportional to 118,272.20, 177,116.70 and 78,614.60

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Solution

The fourth proportional to 118,272.20, 177,116.70 and 78,614.60 is: 117,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,272.20 : 177,116.70 = 78,614.60 : x
  2. Step 2: Convert to fraction form
    118,272.20/177,116.70 = 78,614.60/x
  3. Step 3: Cross multiply
    118,272.20x = 177,116.70 × 78,614.60
  4. Step 4: Simplify right side
    118,272.20x = 13,923,958,523.82
  5. Step 5: Solve for x
    x = 13,923,958,523.82/118,272.20
  6. Step 6: Final answer
    x = 117,728.08

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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.