Home / 118,098,138.80-177,147,208.20-81,109,845.20

Finding the Fourth Proportional to 118,098,138.80, 177,147,208.20 and 81,109,845.20

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Solution

The fourth proportional to 118,098,138.80, 177,147,208.20 and 81,109,845.20 is: 121,664,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,098,138.80 : 177,147,208.20 = 81,109,845.20 : x
  2. Step 2: Convert to fraction form
    118,098,138.80/177,147,208.20 = 81,109,845.20/x
  3. Step 3: Cross multiply
    118,098,138.80x = 177,147,208.20 × 81,109,845.20
  4. Step 4: Simplify right side
    118,098,138.80x = 14,368,382,634,714,170
  5. Step 5: Solve for x
    x = 14,368,382,634,714,170/118,098,138.80
  6. Step 6: Final answer
    x = 121,664,767.80

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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.