Home / 187,336.20-280,421.10-108,215.40

Finding the Fourth Proportional to 187,336.20, 280,421.10 and 108,215.40

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Solution

The fourth proportional to 187,336.20, 280,421.10 and 108,215.40 is: 161,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,336.20 : 280,421.10 = 108,215.40 : x
  2. Step 2: Convert to fraction form
    187,336.20/280,421.10 = 108,215.40/x
  3. Step 3: Cross multiply
    187,336.20x = 280,421.10 × 108,215.40
  4. Step 4: Simplify right side
    187,336.20x = 30,345,881,504.94
  5. Step 5: Solve for x
    x = 30,345,881,504.94/187,336.20
  6. Step 6: Final answer
    x = 161,986.21

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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.