Home / 171,099,321.60-256,648,982.40-78,982,881.60

Finding the Fourth Proportional to 171,099,321.60, 256,648,982.40 and 78,982,881.60

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Solution

The fourth proportional to 171,099,321.60, 256,648,982.40 and 78,982,881.60 is: 118,474,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,099,321.60 : 256,648,982.40 = 78,982,881.60 : x
  2. Step 2: Convert to fraction form
    171,099,321.60/256,648,982.40 = 78,982,881.60/x
  3. Step 3: Cross multiply
    171,099,321.60x = 256,648,982.40 × 78,982,881.60
  4. Step 4: Simplify right side
    171,099,321.60x = 20,270,876,189,659,684
  5. Step 5: Solve for x
    x = 20,270,876,189,659,684/171,099,321.60
  6. Step 6: Final answer
    x = 118,474,322.40

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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.