Home / 128,262,091.62-192,390,441.96-31,218,340.62

Finding the Fourth Proportional to 128,262,091.62, 192,390,441.96 and 31,218,340.62

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Solution

The fourth proportional to 128,262,091.62, 192,390,441.96 and 31,218,340.62 is: 46,826,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262,091.62 : 192,390,441.96 = 31,218,340.62 : x
  2. Step 2: Convert to fraction form
    128,262,091.62/192,390,441.96 = 31,218,340.62/x
  3. Step 3: Cross multiply
    128,262,091.62x = 192,390,441.96 × 31,218,340.62
  4. Step 4: Simplify right side
    128,262,091.62x = 6,006,110,349,139,621
  5. Step 5: Solve for x
    x = 6,006,110,349,139,621/128,262,091.62
  6. Step 6: Final answer
    x = 46,826,854.87

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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.