Home / 149,380.74-206,142.77-81,398.19

Finding the Fourth Proportional to 149,380.74, 206,142.77 and 81,398.19

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Solution

The fourth proportional to 149,380.74, 206,142.77 and 81,398.19 is: 112,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,380.74 : 206,142.77 = 81,398.19 : x
  2. Step 2: Convert to fraction form
    149,380.74/206,142.77 = 81,398.19/x
  3. Step 3: Cross multiply
    149,380.74x = 206,142.77 × 81,398.19
  4. Step 4: Simplify right side
    149,380.74x = 16,779,647,952.60
  5. Step 5: Solve for x
    x = 16,779,647,952.60/149,380.74
  6. Step 6: Final answer
    x = 112,328.05

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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.