Home / 206,708.14-285,222.90-121,813.66

Finding the Fourth Proportional to 206,708.14, 285,222.90 and 121,813.66

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Solution

The fourth proportional to 206,708.14, 285,222.90 and 121,813.66 is: 168,082.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,708.14 : 285,222.90 = 121,813.66 : x
  2. Step 2: Convert to fraction form
    206,708.14/285,222.90 = 121,813.66/x
  3. Step 3: Cross multiply
    206,708.14x = 285,222.90 × 121,813.66
  4. Step 4: Simplify right side
    206,708.14x = 34,744,045,364.81
  5. Step 5: Solve for x
    x = 34,744,045,364.81/206,708.14
  6. Step 6: Final answer
    x = 168,082.62

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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.