Home / 149,630.75-206,495.41-81,651.45

Finding the Fourth Proportional to 149,630.75, 206,495.41 and 81,651.45

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Solution

The fourth proportional to 149,630.75, 206,495.41 and 81,651.45 is: 112,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,630.75 : 206,495.41 = 81,651.45 : x
  2. Step 2: Convert to fraction form
    149,630.75/206,495.41 = 81,651.45/x
  3. Step 3: Cross multiply
    149,630.75x = 206,495.41 × 81,651.45
  4. Step 4: Simplify right side
    149,630.75x = 16,860,648,720.35
  5. Step 5: Solve for x
    x = 16,860,648,720.35/149,630.75
  6. Step 6: Final answer
    x = 112,681.71

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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.