Home / 187,836,317.31-281,755,970.67-77,143,467.87

Finding the Fourth Proportional to 187,836,317.31, 281,755,970.67 and 77,143,467.87

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Solution

The fourth proportional to 187,836,317.31, 281,755,970.67 and 77,143,467.87 is: 115,715,815.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,836,317.31 : 281,755,970.67 = 77,143,467.87 : x
  2. Step 2: Convert to fraction form
    187,836,317.31/281,755,970.67 = 77,143,467.87/x
  3. Step 3: Cross multiply
    187,836,317.31x = 281,755,970.67 × 77,143,467.87
  4. Step 4: Simplify right side
    187,836,317.31x = 21,735,632,670,561,812
  5. Step 5: Solve for x
    x = 21,735,632,670,561,812/187,836,317.31
  6. Step 6: Final answer
    x = 115,715,815.67

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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.