Home / 156,380.31-215,805.21-84,760.26

Finding the Fourth Proportional to 156,380.31, 215,805.21 and 84,760.26

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Solution

The fourth proportional to 156,380.31, 215,805.21 and 84,760.26 is: 116,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,380.31 : 215,805.21 = 84,760.26 : x
  2. Step 2: Convert to fraction form
    156,380.31/215,805.21 = 84,760.26/x
  3. Step 3: Cross multiply
    156,380.31x = 215,805.21 × 84,760.26
  4. Step 4: Simplify right side
    156,380.31x = 18,291,705,708.95
  5. Step 5: Solve for x
    x = 18,291,705,708.95/156,380.31
  6. Step 6: Final answer
    x = 116,969.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.