Home / 103,786,755-143,201,960.40-61,962,680.40

Finding the Fourth Proportional to 103,786,755, 143,201,960.40 and 61,962,680.40

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Solution

The fourth proportional to 103,786,755, 143,201,960.40 and 61,962,680.40 is: 85,494,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786,755 : 143,201,960.40 = 61,962,680.40 : x
  2. Step 2: Convert to fraction form
    103,786,755/143,201,960.40 = 61,962,680.40/x
  3. Step 3: Cross multiply
    103,786,755x = 143,201,960.40 × 61,962,680.40
  4. Step 4: Simplify right side
    103,786,755x = 8,873,177,304,918,656
  5. Step 5: Solve for x
    x = 8,873,177,304,918,656/103,786,755
  6. Step 6: Final answer
    x = 85,494,312.88

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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.