Home / 149,409.20-206,184.64-82,341.20

Finding the Fourth Proportional to 149,409.20, 206,184.64 and 82,341.20

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Solution

The fourth proportional to 149,409.20, 206,184.64 and 82,341.20 is: 113,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,409.20 : 206,184.64 = 82,341.20 : x
  2. Step 2: Convert to fraction form
    149,409.20/206,184.64 = 82,341.20/x
  3. Step 3: Cross multiply
    149,409.20x = 206,184.64 × 82,341.20
  4. Step 4: Simplify right side
    149,409.20x = 16,977,490,679.17
  5. Step 5: Solve for x
    x = 16,977,490,679.17/149,409.20
  6. Step 6: Final answer
    x = 113,630.83

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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.