Home / 81,907,439.40-122,861,159.10-68,993,423.10

Finding the Fourth Proportional to 81,907,439.40, 122,861,159.10 and 68,993,423.10

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Solution

The fourth proportional to 81,907,439.40, 122,861,159.10 and 68,993,423.10 is: 103,490,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,907,439.40 : 122,861,159.10 = 68,993,423.10 : x
  2. Step 2: Convert to fraction form
    81,907,439.40/122,861,159.10 = 68,993,423.10/x
  3. Step 3: Cross multiply
    81,907,439.40x = 122,861,159.10 × 68,993,423.10
  4. Step 4: Simplify right side
    81,907,439.40x = 8,476,611,932,342,714
  5. Step 5: Solve for x
    x = 8,476,611,932,342,714/81,907,439.40
  6. Step 6: Final answer
    x = 103,490,134.65

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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.