Home / 78,157.64-117,184.62-25,548.68

Finding the Fourth Proportional to 78,157.64, 117,184.62 and 25,548.68

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Solution

The fourth proportional to 78,157.64, 117,184.62 and 25,548.68 is: 38,306.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.64 : 117,184.62 = 25,548.68 : x
  2. Step 2: Convert to fraction form
    78,157.64/117,184.62 = 25,548.68/x
  3. Step 3: Cross multiply
    78,157.64x = 117,184.62 × 25,548.68
  4. Step 4: Simplify right side
    78,157.64x = 2,993,912,357.30
  5. Step 5: Solve for x
    x = 2,993,912,357.30/78,157.64
  6. Step 6: Final answer
    x = 38,306.07

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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.