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Finding the Fourth Proportional to 149,298.81, 206,032.37 and 82,230.81

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Solution

The fourth proportional to 149,298.81, 206,032.37 and 82,230.81 is: 113,478.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,298.81 : 206,032.37 = 82,230.81 : x
  2. Step 2: Convert to fraction form
    149,298.81/206,032.37 = 82,230.81/x
  3. Step 3: Cross multiply
    149,298.81x = 206,032.37 × 82,230.81
  4. Step 4: Simplify right side
    149,298.81x = 16,942,208,671.32
  5. Step 5: Solve for x
    x = 16,942,208,671.32/149,298.81
  6. Step 6: Final answer
    x = 113,478.52

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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.