Home / 149,384.12-206,148.21-81,404.06

Finding the Fourth Proportional to 149,384.12, 206,148.21 and 81,404.06

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Solution

The fourth proportional to 149,384.12, 206,148.21 and 81,404.06 is: 112,336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,384.12 : 206,148.21 = 81,404.06 : x
  2. Step 2: Convert to fraction form
    149,384.12/206,148.21 = 81,404.06/x
  3. Step 3: Cross multiply
    149,384.12x = 206,148.21 × 81,404.06
  4. Step 4: Simplify right side
    149,384.12x = 16,781,301,255.73
  5. Step 5: Solve for x
    x = 16,781,301,255.73/149,384.12
  6. Step 6: Final answer
    x = 112,336.58

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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.