Home / 207,036,143.20-310,436,116.80-77,647,974.40

Finding the Fourth Proportional to 207,036,143.20, 310,436,116.80 and 77,647,974.40

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Solution

The fourth proportional to 207,036,143.20, 310,436,116.80 and 77,647,974.40 is: 116,427,669.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,036,143.20 : 310,436,116.80 = 77,647,974.40 : x
  2. Step 2: Convert to fraction form
    207,036,143.20/310,436,116.80 = 77,647,974.40/x
  3. Step 3: Cross multiply
    207,036,143.20x = 310,436,116.80 × 77,647,974.40
  4. Step 4: Simplify right side
    207,036,143.20x = 24,104,735,650,121,812
  5. Step 5: Solve for x
    x = 24,104,735,650,121,812/207,036,143.20
  6. Step 6: Final answer
    x = 116,427,669.48

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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.