Home / 118,214.20-177,029.70-78,556.60

Finding the Fourth Proportional to 118,214.20, 177,029.70 and 78,556.60

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Solution

The fourth proportional to 118,214.20, 177,029.70 and 78,556.60 is: 117,641.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,214.20 : 177,029.70 = 78,556.60 : x
  2. Step 2: Convert to fraction form
    118,214.20/177,029.70 = 78,556.60/x
  3. Step 3: Cross multiply
    118,214.20x = 177,029.70 × 78,556.60
  4. Step 4: Simplify right side
    118,214.20x = 13,906,851,331.02
  5. Step 5: Solve for x
    x = 13,906,851,331.02/118,214.20
  6. Step 6: Final answer
    x = 117,641.12

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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.