Home / 205,121.40-307,682.10-149,134.20

Finding the Fourth Proportional to 205,121.40, 307,682.10 and 149,134.20

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Solution

The fourth proportional to 205,121.40, 307,682.10 and 149,134.20 is: 223,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,121.40 : 307,682.10 = 149,134.20 : x
  2. Step 2: Convert to fraction form
    205,121.40/307,682.10 = 149,134.20/x
  3. Step 3: Cross multiply
    205,121.40x = 307,682.10 × 149,134.20
  4. Step 4: Simplify right side
    205,121.40x = 45,885,923,837.82
  5. Step 5: Solve for x
    x = 45,885,923,837.82/205,121.40
  6. Step 6: Final answer
    x = 223,701.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.