Home / 187,137.40-280,619.70-81,902.20

Finding the Fourth Proportional to 187,137.40, 280,619.70 and 81,902.20

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Solution

The fourth proportional to 187,137.40, 280,619.70 and 81,902.20 is: 122,815.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,137.40 : 280,619.70 = 81,902.20 : x
  2. Step 2: Convert to fraction form
    187,137.40/280,619.70 = 81,902.20/x
  3. Step 3: Cross multiply
    187,137.40x = 280,619.70 × 81,902.20
  4. Step 4: Simplify right side
    187,137.40x = 22,983,370,793.34
  5. Step 5: Solve for x
    x = 22,983,370,793.34/187,137.40
  6. Step 6: Final answer
    x = 122,815.49

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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.