Home / 12,143,145.60-18,209,188.80-5,408,092.80

Finding the Fourth Proportional to 12,143,145.60, 18,209,188.80 and 5,408,092.80

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Solution

The fourth proportional to 12,143,145.60, 18,209,188.80 and 5,408,092.80 is: 8,109,676.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143,145.60 : 18,209,188.80 = 5,408,092.80 : x
  2. Step 2: Convert to fraction form
    12,143,145.60/18,209,188.80 = 5,408,092.80/x
  3. Step 3: Cross multiply
    12,143,145.60x = 18,209,188.80 × 5,408,092.80
  4. Step 4: Simplify right side
    12,143,145.60x = 98,476,982,843,120.64
  5. Step 5: Solve for x
    x = 98,476,982,843,120.64/12,143,145.60
  6. Step 6: Final answer
    x = 8,109,676.53

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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.