Home / 12,780,157.60-19,160,905.20-5,203,223.20

Finding the Fourth Proportional to 12,780,157.60, 19,160,905.20 and 5,203,223.20

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Solution

The fourth proportional to 12,780,157.60, 19,160,905.20 and 5,203,223.20 is: 7,801,035.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,157.60 : 19,160,905.20 = 5,203,223.20 : x
  2. Step 2: Convert to fraction form
    12,780,157.60/19,160,905.20 = 5,203,223.20/x
  3. Step 3: Cross multiply
    12,780,157.60x = 19,160,905.20 × 5,203,223.20
  4. Step 4: Simplify right side
    12,780,157.60x = 99,698,466,469,640.64
  5. Step 5: Solve for x
    x = 99,698,466,469,640.64/12,780,157.60
  6. Step 6: Final answer
    x = 7,801,035.76

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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.