Home / 123,376,229.87-170,277,948.93-78,741,460.43

Finding the Fourth Proportional to 123,376,229.87, 170,277,948.93 and 78,741,460.43

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Solution

The fourth proportional to 123,376,229.87, 170,277,948.93 and 78,741,460.43 is: 108,675,183.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,376,229.87 : 170,277,948.93 = 78,741,460.43 : x
  2. Step 2: Convert to fraction form
    123,376,229.87/170,277,948.93 = 78,741,460.43/x
  3. Step 3: Cross multiply
    123,376,229.87x = 170,277,948.93 × 78,741,460.43
  4. Step 4: Simplify right side
    123,376,229.87x = 13,407,934,377,855,588
  5. Step 5: Solve for x
    x = 13,407,934,377,855,588/123,376,229.87
  6. Step 6: Final answer
    x = 108,675,183.16

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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.