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Finding the Fourth Proportional to 149,696.40, 206,579.76 and 82,628.40

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Solution

The fourth proportional to 149,696.40, 206,579.76 and 82,628.40 is: 114,026.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,696.40 : 206,579.76 = 82,628.40 : x
  2. Step 2: Convert to fraction form
    149,696.40/206,579.76 = 82,628.40/x
  3. Step 3: Cross multiply
    149,696.40x = 206,579.76 × 82,628.40
  4. Step 4: Simplify right side
    149,696.40x = 17,069,355,041.18
  5. Step 5: Solve for x
    x = 17,069,355,041.18/149,696.40
  6. Step 6: Final answer
    x = 114,026.49

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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.