Home / 156,930,420.70-235,289,342.85-80,190,340.30

Finding the Fourth Proportional to 156,930,420.70, 235,289,342.85 and 80,190,340.30

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Solution

The fourth proportional to 156,930,420.70, 235,289,342.85 and 80,190,340.30 is: 120,231,197.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930,420.70 : 235,289,342.85 = 80,190,340.30 : x
  2. Step 2: Convert to fraction form
    156,930,420.70/235,289,342.85 = 80,190,340.30/x
  3. Step 3: Cross multiply
    156,930,420.70x = 235,289,342.85 × 80,190,340.30
  4. Step 4: Simplify right side
    156,930,420.70x = 18,867,932,472,104,872
  5. Step 5: Solve for x
    x = 18,867,932,472,104,872/156,930,420.70
  6. Step 6: Final answer
    x = 120,231,197.93

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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.