Home / 128,205,790.08-192,307,005.36-31,161,215.76

Finding the Fourth Proportional to 128,205,790.08, 192,307,005.36 and 31,161,215.76

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Solution

The fourth proportional to 128,205,790.08, 192,307,005.36 and 31,161,215.76 is: 46,741,415.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,205,790.08 : 192,307,005.36 = 31,161,215.76 : x
  2. Step 2: Convert to fraction form
    128,205,790.08/192,307,005.36 = 31,161,215.76/x
  3. Step 3: Cross multiply
    128,205,790.08x = 192,307,005.36 × 31,161,215.76
  4. Step 4: Simplify right side
    128,205,790.08x = 5,992,520,086,182,437
  5. Step 5: Solve for x
    x = 5,992,520,086,182,437/128,205,790.08
  6. Step 6: Final answer
    x = 46,741,415.36

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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.