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Finding the Fourth Proportional to 141,661.20, 213,010.20 and 118,851.60

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Solution

The fourth proportional to 141,661.20, 213,010.20 and 118,851.60 is: 178,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,661.20 : 213,010.20 = 118,851.60 : x
  2. Step 2: Convert to fraction form
    141,661.20/213,010.20 = 118,851.60/x
  3. Step 3: Cross multiply
    141,661.20x = 213,010.20 × 118,851.60
  4. Step 4: Simplify right side
    141,661.20x = 25,316,603,086.32
  5. Step 5: Solve for x
    x = 25,316,603,086.32/141,661.20
  6. Step 6: Final answer
    x = 178,712.33

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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.