Home / 128,385,256.47-192,702,415.07-61,958,431.80

Finding the Fourth Proportional to 128,385,256.47, 192,702,415.07 and 61,958,431.80

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Solution

The fourth proportional to 128,385,256.47, 192,702,415.07 and 61,958,431.80 is: 92,997,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,385,256.47 : 192,702,415.07 = 61,958,431.80 : x
  2. Step 2: Convert to fraction form
    128,385,256.47/192,702,415.07 = 61,958,431.80/x
  3. Step 3: Cross multiply
    128,385,256.47x = 192,702,415.07 × 61,958,431.80
  4. Step 4: Simplify right side
    128,385,256.47x = 11,939,539,441,809,886
  5. Step 5: Solve for x
    x = 11,939,539,441,809,886/128,385,256.47
  6. Step 6: Final answer
    x = 92,997,745.77

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.