Home / 149,438.25-206,223.45-81,455.22

Finding the Fourth Proportional to 149,438.25, 206,223.45 and 81,455.22

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Solution

The fourth proportional to 149,438.25, 206,223.45 and 81,455.22 is: 112,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,438.25 : 206,223.45 = 81,455.22 : x
  2. Step 2: Convert to fraction form
    149,438.25/206,223.45 = 81,455.22/x
  3. Step 3: Cross multiply
    149,438.25x = 206,223.45 × 81,455.22
  4. Step 4: Simplify right side
    149,438.25x = 16,797,976,488.91
  5. Step 5: Solve for x
    x = 16,797,976,488.91/149,438.25
  6. Step 6: Final answer
    x = 112,407.48

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1.5x scale

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.