Home / 128,032,371.52-192,056,809.76-45,023,940.88

Finding the Fourth Proportional to 128,032,371.52, 192,056,809.76 and 45,023,940.88

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Solution

The fourth proportional to 128,032,371.52, 192,056,809.76 and 45,023,940.88 is: 67,538,813.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,032,371.52 : 192,056,809.76 = 45,023,940.88 : x
  2. Step 2: Convert to fraction form
    128,032,371.52/192,056,809.76 = 45,023,940.88/x
  3. Step 3: Cross multiply
    128,032,371.52x = 192,056,809.76 × 45,023,940.88
  4. Step 4: Simplify right side
    128,032,371.52x = 8,647,154,448,235,647
  5. Step 5: Solve for x
    x = 8,647,154,448,235,647/128,032,371.52
  6. Step 6: Final answer
    x = 67,538,813.39

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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.