Home / 150,380,821.05-207,537,956.60-83,421,367.71

Finding the Fourth Proportional to 150,380,821.05, 207,537,956.60 and 83,421,367.71

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Solution

The fourth proportional to 150,380,821.05, 207,537,956.60 and 83,421,367.71 is: 115,128,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,380,821.05 : 207,537,956.60 = 83,421,367.71 : x
  2. Step 2: Convert to fraction form
    150,380,821.05/207,537,956.60 = 83,421,367.71/x
  3. Step 3: Cross multiply
    150,380,821.05x = 207,537,956.60 × 83,421,367.71
  4. Step 4: Simplify right side
    150,380,821.05x = 17,313,100,191,021,680
  5. Step 5: Solve for x
    x = 17,313,100,191,021,680/150,380,821.05
  6. Step 6: Final answer
    x = 115,128,379.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.