Home / 128,405,351.25-192,567,567.38-42,123,652.29

Finding the Fourth Proportional to 128,405,351.25, 192,567,567.38 and 42,123,652.29

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Solution

The fourth proportional to 128,405,351.25, 192,567,567.38 and 42,123,652.29 is: 63,172,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,405,351.25 : 192,567,567.38 = 42,123,652.29 : x
  2. Step 2: Convert to fraction form
    128,405,351.25/192,567,567.38 = 42,123,652.29/x
  3. Step 3: Cross multiply
    128,405,351.25x = 192,567,567.38 × 42,123,652.29
  4. Step 4: Simplify right side
    128,405,351.25x = 8,111,649,250,435,648
  5. Step 5: Solve for x
    x = 8,111,649,250,435,648/128,405,351.25
  6. Step 6: Final answer
    x = 63,172,205.61

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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.