Home / 143,741,384.87-198,363,111.11-81,867,480.71

Finding the Fourth Proportional to 143,741,384.87, 198,363,111.11 and 81,867,480.71

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Solution

The fourth proportional to 143,741,384.87, 198,363,111.11 and 81,867,480.71 is: 112,977,123.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,741,384.87 : 198,363,111.11 = 81,867,480.71 : x
  2. Step 2: Convert to fraction form
    143,741,384.87/198,363,111.11 = 81,867,480.71/x
  3. Step 3: Cross multiply
    143,741,384.87x = 198,363,111.11 × 81,867,480.71
  4. Step 4: Simplify right side
    143,741,384.87x = 16,239,488,171,279,360
  5. Step 5: Solve for x
    x = 16,239,488,171,279,360/143,741,384.87
  6. Step 6: Final answer
    x = 112,977,123.37

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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.