Home / 128,636,488.25-192,449,632.49-99,268,449.56

Finding the Fourth Proportional to 128,636,488.25, 192,449,632.49 and 99,268,449.56

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Solution

The fourth proportional to 128,636,488.25, 192,449,632.49 and 99,268,449.56 is: 148,512,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,636,488.25 : 192,449,632.49 = 99,268,449.56 : x
  2. Step 2: Convert to fraction form
    128,636,488.25/192,449,632.49 = 99,268,449.56/x
  3. Step 3: Cross multiply
    128,636,488.25x = 192,449,632.49 × 99,268,449.56
  4. Step 4: Simplify right side
    128,636,488.25x = 19,104,176,635,674,104
  5. Step 5: Solve for x
    x = 19,104,176,635,674,104/128,636,488.25
  6. Step 6: Final answer
    x = 148,512,890.05

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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.