Home / 108,738.20-162,905.70-61,851.80

Finding the Fourth Proportional to 108,738.20, 162,905.70 and 61,851.80

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Solution

The fourth proportional to 108,738.20, 162,905.70 and 61,851.80 is: 92,663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,738.20 : 162,905.70 = 61,851.80 : x
  2. Step 2: Convert to fraction form
    108,738.20/162,905.70 = 61,851.80/x
  3. Step 3: Cross multiply
    108,738.20x = 162,905.70 × 61,851.80
  4. Step 4: Simplify right side
    108,738.20x = 10,076,010,775.26
  5. Step 5: Solve for x
    x = 10,076,010,775.26/108,738.20
  6. Step 6: Final answer
    x = 92,663.03

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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.