Home / 206,813.79-285,423.93-126,288.45

Finding the Fourth Proportional to 206,813.79, 285,423.93 and 126,288.45

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Solution

The fourth proportional to 206,813.79, 285,423.93 and 126,288.45 is: 174,290.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,813.79 : 285,423.93 = 126,288.45 : x
  2. Step 2: Convert to fraction form
    206,813.79/285,423.93 = 126,288.45/x
  3. Step 3: Cross multiply
    206,813.79x = 285,423.93 × 126,288.45
  4. Step 4: Simplify right side
    206,813.79x = 36,045,745,712.61
  5. Step 5: Solve for x
    x = 36,045,745,712.61/206,813.79
  6. Step 6: Final answer
    x = 174,290.82

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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.