Home / 208,718,311.20-313,115,954.67-68,666,649.96

Finding the Fourth Proportional to 208,718,311.20, 313,115,954.67 and 68,666,649.96

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Solution

The fourth proportional to 208,718,311.20, 313,115,954.67 and 68,666,649.96 is: 103,012,637.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,718,311.20 : 313,115,954.67 = 68,666,649.96 : x
  2. Step 2: Convert to fraction form
    208,718,311.20/313,115,954.67 = 68,666,649.96/x
  3. Step 3: Cross multiply
    208,718,311.20x = 313,115,954.67 × 68,666,649.96
  4. Step 4: Simplify right side
    208,718,311.20x = 21,500,623,656,216,116
  5. Step 5: Solve for x
    x = 21,500,623,656,216,116/208,718,311.20
  6. Step 6: Final answer
    x = 103,012,637.14

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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.