Home / 128,205,766.08-192,306,969.36-31,161,191.76

Finding the Fourth Proportional to 128,205,766.08, 192,306,969.36 and 31,161,191.76

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Solution

The fourth proportional to 128,205,766.08, 192,306,969.36 and 31,161,191.76 is: 46,741,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,205,766.08 : 192,306,969.36 = 31,161,191.76 : x
  2. Step 2: Convert to fraction form
    128,205,766.08/192,306,969.36 = 31,161,191.76/x
  3. Step 3: Cross multiply
    128,205,766.08x = 192,306,969.36 × 31,161,191.76
  4. Step 4: Simplify right side
    128,205,766.08x = 5,992,514,349,011,405
  5. Step 5: Solve for x
    x = 5,992,514,349,011,405/128,205,766.08
  6. Step 6: Final answer
    x = 46,741,379.36

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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.