Home / 149,420.27-206,193.95-81,435.78

Finding the Fourth Proportional to 149,420.27, 206,193.95 and 81,435.78

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Solution

The fourth proportional to 149,420.27, 206,193.95 and 81,435.78 is: 112,378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,420.27 : 206,193.95 = 81,435.78 : x
  2. Step 2: Convert to fraction form
    149,420.27/206,193.95 = 81,435.78/x
  3. Step 3: Cross multiply
    149,420.27x = 206,193.95 × 81,435.78
  4. Step 4: Simplify right side
    149,420.27x = 16,791,565,149.53
  5. Step 5: Solve for x
    x = 16,791,565,149.53/149,420.27
  6. Step 6: Final answer
    x = 112,378.09

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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.