Home / 128,115,865.20-192,155,135.40-37,229,977.20

Finding the Fourth Proportional to 128,115,865.20, 192,155,135.40 and 37,229,977.20

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Solution

The fourth proportional to 128,115,865.20, 192,155,135.40 and 37,229,977.20 is: 55,839,542.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115,865.20 : 192,155,135.40 = 37,229,977.20 : x
  2. Step 2: Convert to fraction form
    128,115,865.20/192,155,135.40 = 37,229,977.20/x
  3. Step 3: Cross multiply
    128,115,865.20x = 192,155,135.40 × 37,229,977.20
  4. Step 4: Simplify right side
    128,115,865.20x = 7,153,931,309,804,914
  5. Step 5: Solve for x
    x = 7,153,931,309,804,914/128,115,865.20
  6. Step 6: Final answer
    x = 55,839,542.58

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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.