Home / 149,411.25-206,190.50-81,427.95

Finding the Fourth Proportional to 149,411.25, 206,190.50 and 81,427.95

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Solution

The fourth proportional to 149,411.25, 206,190.50 and 81,427.95 is: 112,372.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,411.25 : 206,190.50 = 81,427.95 : x
  2. Step 2: Convert to fraction form
    149,411.25/206,190.50 = 81,427.95/x
  3. Step 3: Cross multiply
    149,411.25x = 206,190.50 × 81,427.95
  4. Step 4: Simplify right side
    149,411.25x = 16,789,669,317.34
  5. Step 5: Solve for x
    x = 16,789,669,317.34/149,411.25
  6. Step 6: Final answer
    x = 112,372.19

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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.