Home / 149,420.20-206,194.58-81,435.82

Finding the Fourth Proportional to 149,420.20, 206,194.58 and 81,435.82

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Solution

The fourth proportional to 149,420.20, 206,194.58 and 81,435.82 is: 112,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,420.20 : 206,194.58 = 81,435.82 : x
  2. Step 2: Convert to fraction form
    149,420.20/206,194.58 = 81,435.82/x
  3. Step 3: Cross multiply
    149,420.20x = 206,194.58 × 81,435.82
  4. Step 4: Simplify right side
    149,420.20x = 16,791,624,701.86
  5. Step 5: Solve for x
    x = 16,791,624,701.86/149,420.20
  6. Step 6: Final answer
    x = 112,378.55

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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.