Home / 149,870.06-206,818.26-81,885.58

Finding the Fourth Proportional to 149,870.06, 206,818.26 and 81,885.58

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Solution

The fourth proportional to 149,870.06, 206,818.26 and 81,885.58 is: 113,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,870.06 : 206,818.26 = 81,885.58 : x
  2. Step 2: Convert to fraction form
    149,870.06/206,818.26 = 81,885.58/x
  3. Step 3: Cross multiply
    149,870.06x = 206,818.26 × 81,885.58
  4. Step 4: Simplify right side
    149,870.06x = 16,935,433,174.69
  5. Step 5: Solve for x
    x = 16,935,433,174.69/149,870.06
  6. Step 6: Final answer
    x = 113,000.78

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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.