Home / 128,262,089.37-192,390,438.58-31,218,338.37

Finding the Fourth Proportional to 128,262,089.37, 192,390,438.58 and 31,218,338.37

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Solution

The fourth proportional to 128,262,089.37, 192,390,438.58 and 31,218,338.37 is: 46,826,851.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262,089.37 : 192,390,438.58 = 31,218,338.37 : x
  2. Step 2: Convert to fraction form
    128,262,089.37/192,390,438.58 = 31,218,338.37/x
  3. Step 3: Cross multiply
    128,262,089.37x = 192,390,438.58 × 31,218,338.37
  4. Step 4: Simplify right side
    128,262,089.37x = 6,006,109,810,665,096
  5. Step 5: Solve for x
    x = 6,006,109,810,665,096/128,262,089.37
  6. Step 6: Final answer
    x = 46,826,851.49

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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.