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Finding the Fourth Proportional to 118,234.40, 177,351.60 and 111,819.20

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Solution

The fourth proportional to 118,234.40, 177,351.60 and 111,819.20 is: 167,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,234.40 : 177,351.60 = 111,819.20 : x
  2. Step 2: Convert to fraction form
    118,234.40/177,351.60 = 111,819.20/x
  3. Step 3: Cross multiply
    118,234.40x = 177,351.60 × 111,819.20
  4. Step 4: Simplify right side
    118,234.40x = 19,831,314,030.72
  5. Step 5: Solve for x
    x = 19,831,314,030.72/118,234.40
  6. Step 6: Final answer
    x = 167,728.80

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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.