Home / 149,962.83-206,949.11-81,980.61

Finding the Fourth Proportional to 149,962.83, 206,949.11 and 81,980.61

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Solution

The fourth proportional to 149,962.83, 206,949.11 and 81,980.61 is: 113,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,962.83 : 206,949.11 = 81,980.61 : x
  2. Step 2: Convert to fraction form
    149,962.83/206,949.11 = 81,980.61/x
  3. Step 3: Cross multiply
    149,962.83x = 206,949.11 × 81,980.61
  4. Step 4: Simplify right side
    149,962.83x = 16,965,814,276.76
  5. Step 5: Solve for x
    x = 16,965,814,276.76/149,962.83
  6. Step 6: Final answer
    x = 113,133.46

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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.