Home / 78,157.22-117,235.52-18,993.06

Finding the Fourth Proportional to 78,157.22, 117,235.52 and 18,993.06

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Solution

The fourth proportional to 78,157.22, 117,235.52 and 18,993.06 is: 28,489.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.22 : 117,235.52 = 18,993.06 : x
  2. Step 2: Convert to fraction form
    78,157.22/117,235.52 = 18,993.06/x
  3. Step 3: Cross multiply
    78,157.22x = 117,235.52 × 18,993.06
  4. Step 4: Simplify right side
    78,157.22x = 2,226,661,241.75
  5. Step 5: Solve for x
    x = 2,226,661,241.75/78,157.22
  6. Step 6: Final answer
    x = 28,489.52

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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.