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Finding the Fourth Proportional to 161,128.80, 241,808.40 and 67,701.60

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Solution

The fourth proportional to 161,128.80, 241,808.40 and 67,701.60 is: 101,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,128.80 : 241,808.40 = 67,701.60 : x
  2. Step 2: Convert to fraction form
    161,128.80/241,808.40 = 67,701.60/x
  3. Step 3: Cross multiply
    161,128.80x = 241,808.40 × 67,701.60
  4. Step 4: Simplify right side
    161,128.80x = 16,370,815,573.44
  5. Step 5: Solve for x
    x = 16,370,815,573.44/161,128.80
  6. Step 6: Final answer
    x = 101,600.80

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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.