Home / 128,636,488.76-192,449,633.24-99,268,450.07

Finding the Fourth Proportional to 128,636,488.76, 192,449,633.24 and 99,268,450.07

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Solution

The fourth proportional to 128,636,488.76, 192,449,633.24 and 99,268,450.07 is: 148,512,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,636,488.76 : 192,449,633.24 = 99,268,450.07 : x
  2. Step 2: Convert to fraction form
    128,636,488.76/192,449,633.24 = 99,268,450.07/x
  3. Step 3: Cross multiply
    128,636,488.76x = 192,449,633.24 × 99,268,450.07
  4. Step 4: Simplify right side
    128,636,488.76x = 19,104,176,806,816,164
  5. Step 5: Solve for x
    x = 19,104,176,806,816,164/128,636,488.76
  6. Step 6: Final answer
    x = 148,512,890.80

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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.