Home / 149,407.06-206,174.40-81,423.84

Finding the Fourth Proportional to 149,407.06, 206,174.40 and 81,423.84

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Solution

The fourth proportional to 149,407.06, 206,174.40 and 81,423.84 is: 112,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,407.06 : 206,174.40 = 81,423.84 : x
  2. Step 2: Convert to fraction form
    149,407.06/206,174.40 = 81,423.84/x
  3. Step 3: Cross multiply
    149,407.06x = 206,174.40 × 81,423.84
  4. Step 4: Simplify right side
    149,407.06x = 16,787,511,357.70
  5. Step 5: Solve for x
    x = 16,787,511,357.70/149,407.06
  6. Step 6: Final answer
    x = 112,360.90

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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.