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Finding the Fourth Proportional to 125,215.63, 187,845.31 and 55,093.12

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Solution

The fourth proportional to 125,215.63, 187,845.31 and 55,093.12 is: 82,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,215.63 : 187,845.31 = 55,093.12 : x
  2. Step 2: Convert to fraction form
    125,215.63/187,845.31 = 55,093.12/x
  3. Step 3: Cross multiply
    125,215.63x = 187,845.31 × 55,093.12
  4. Step 4: Simplify right side
    125,215.63x = 10,348,984,205.27
  5. Step 5: Solve for x
    x = 10,348,984,205.27/125,215.63
  6. Step 6: Final answer
    x = 82,649.30

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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.