Home / 156,383.64-215,808.18-84,761.82

Finding the Fourth Proportional to 156,383.64, 215,808.18 and 84,761.82

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Solution

The fourth proportional to 156,383.64, 215,808.18 and 84,761.82 is: 116,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,383.64 : 215,808.18 = 84,761.82 : x
  2. Step 2: Convert to fraction form
    156,383.64/215,808.18 = 84,761.82/x
  3. Step 3: Cross multiply
    156,383.64x = 215,808.18 × 84,761.82
  4. Step 4: Simplify right side
    156,383.64x = 18,292,294,107.69
  5. Step 5: Solve for x
    x = 18,292,294,107.69/156,383.64
  6. Step 6: Final answer
    x = 116,970.64

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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.