Home / 206,598.72-285,206.40-138,591.36

Finding the Fourth Proportional to 206,598.72, 285,206.40 and 138,591.36

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Solution

The fourth proportional to 206,598.72, 285,206.40 and 138,591.36 is: 191,323.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,598.72 : 285,206.40 = 138,591.36 : x
  2. Step 2: Convert to fraction form
    206,598.72/285,206.40 = 138,591.36/x
  3. Step 3: Cross multiply
    206,598.72x = 285,206.40 × 138,591.36
  4. Step 4: Simplify right side
    206,598.72x = 39,527,142,856.70
  5. Step 5: Solve for x
    x = 39,527,142,856.70/206,598.72
  6. Step 6: Final answer
    x = 191,323.27

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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.