Home / 81,658,376.20-122,345,846.70-68,903,792.20

Finding the Fourth Proportional to 81,658,376.20, 122,345,846.70 and 68,903,792.20

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Solution

The fourth proportional to 81,658,376.20, 122,345,846.70 and 68,903,792.20 is: 103,236,106.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,658,376.20 : 122,345,846.70 = 68,903,792.20 : x
  2. Step 2: Convert to fraction form
    81,658,376.20/122,345,846.70 = 68,903,792.20/x
  3. Step 3: Cross multiply
    81,658,376.20x = 122,345,846.70 × 68,903,792.20
  4. Step 4: Simplify right side
    81,658,376.20x = 8,430,092,797,549,856
  5. Step 5: Solve for x
    x = 8,430,092,797,549,856/81,658,376.20
  6. Step 6: Final answer
    x = 103,236,106.20

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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.