Home / 80,171,133.60-120,256,124.40-19,586,301.60

Finding the Fourth Proportional to 80,171,133.60, 120,256,124.40 and 19,586,301.60

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Solution

The fourth proportional to 80,171,133.60, 120,256,124.40 and 19,586,301.60 is: 29,379,311.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,171,133.60 : 120,256,124.40 = 19,586,301.60 : x
  2. Step 2: Convert to fraction form
    80,171,133.60/120,256,124.40 = 19,586,301.60/x
  3. Step 3: Cross multiply
    80,171,133.60x = 120,256,124.40 × 19,586,301.60
  4. Step 4: Simplify right side
    80,171,133.60x = 2,355,372,721,745,519.50
  5. Step 5: Solve for x
    x = 2,355,372,721,745,519.50/80,171,133.60
  6. Step 6: Final answer
    x = 29,379,311.68

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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.