Home / 261,628.20-392,405.45-84,112.65

Finding the Fourth Proportional to 261,628.20, 392,405.45 and 84,112.65

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Solution

The fourth proportional to 261,628.20, 392,405.45 and 84,112.65 is: 126,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,628.20 : 392,405.45 = 84,112.65 : x
  2. Step 2: Convert to fraction form
    261,628.20/392,405.45 = 84,112.65/x
  3. Step 3: Cross multiply
    261,628.20x = 392,405.45 × 84,112.65
  4. Step 4: Simplify right side
    261,628.20x = 33,006,261,853.38
  5. Step 5: Solve for x
    x = 33,006,261,853.38/261,628.20
  6. Step 6: Final answer
    x = 126,157.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.