Home / 149,962.68-206,948.88-81,980.46

Finding the Fourth Proportional to 149,962.68, 206,948.88 and 81,980.46

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Solution

The fourth proportional to 149,962.68, 206,948.88 and 81,980.46 is: 113,133.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,962.68 : 206,948.88 = 81,980.46 : x
  2. Step 2: Convert to fraction form
    149,962.68/206,948.88 = 81,980.46/x
  3. Step 3: Cross multiply
    149,962.68x = 206,948.88 × 81,980.46
  4. Step 4: Simplify right side
    149,962.68x = 16,965,764,378.88
  5. Step 5: Solve for x
    x = 16,965,764,378.88/149,962.68
  6. Step 6: Final answer
    x = 113,133.24

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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.