Home / 128,262,091.87-192,390,442.32-31,218,340.87

Finding the Fourth Proportional to 128,262,091.87, 192,390,442.32 and 31,218,340.87

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Solution

The fourth proportional to 128,262,091.87, 192,390,442.32 and 31,218,340.87 is: 46,826,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262,091.87 : 192,390,442.32 = 31,218,340.87 : x
  2. Step 2: Convert to fraction form
    128,262,091.87/192,390,442.32 = 31,218,340.87/x
  3. Step 3: Cross multiply
    128,262,091.87x = 192,390,442.32 × 31,218,340.87
  4. Step 4: Simplify right side
    128,262,091.87x = 6,006,110,408,475,834
  5. Step 5: Solve for x
    x = 6,006,110,408,475,834/128,262,091.87
  6. Step 6: Final answer
    x = 46,826,855.24

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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.