Home / 187,086.40-280,435.20-102,716.80

Finding the Fourth Proportional to 187,086.40, 280,435.20 and 102,716.80

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Solution

The fourth proportional to 187,086.40, 280,435.20 and 102,716.80 is: 153,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,086.40 : 280,435.20 = 102,716.80 : x
  2. Step 2: Convert to fraction form
    187,086.40/280,435.20 = 102,716.80/x
  3. Step 3: Cross multiply
    187,086.40x = 280,435.20 × 102,716.80
  4. Step 4: Simplify right side
    187,086.40x = 28,805,406,351.36
  5. Step 5: Solve for x
    x = 28,805,406,351.36/187,086.40
  6. Step 6: Final answer
    x = 153,968.47

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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.