Home / 107,531.20-161,296.80-28,657.60

Finding the Fourth Proportional to 107,531.20, 161,296.80 and 28,657.60

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Solution

The fourth proportional to 107,531.20, 161,296.80 and 28,657.60 is: 42,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,531.20 : 161,296.80 = 28,657.60 : x
  2. Step 2: Convert to fraction form
    107,531.20/161,296.80 = 28,657.60/x
  3. Step 3: Cross multiply
    107,531.20x = 161,296.80 × 28,657.60
  4. Step 4: Simplify right side
    107,531.20x = 4,622,379,175.68
  5. Step 5: Solve for x
    x = 4,622,379,175.68/107,531.20
  6. Step 6: Final answer
    x = 42,986.40

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1.5x scale

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.