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Finding the Fourth Proportional to 187,015.60, 280,620.60 and 81,845.20

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Solution

The fourth proportional to 187,015.60, 280,620.60 and 81,845.20 is: 122,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,015.60 : 280,620.60 = 81,845.20 : x
  2. Step 2: Convert to fraction form
    187,015.60/280,620.60 = 81,845.20/x
  3. Step 3: Cross multiply
    187,015.60x = 280,620.60 × 81,845.20
  4. Step 4: Simplify right side
    187,015.60x = 22,967,449,131.12
  5. Step 5: Solve for x
    x = 22,967,449,131.12/187,015.60
  6. Step 6: Final answer
    x = 122,810.34

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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.