Home / 156,005.12-215,286.44-84,385.32

Finding the Fourth Proportional to 156,005.12, 215,286.44 and 84,385.32

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Solution

The fourth proportional to 156,005.12, 215,286.44 and 84,385.32 is: 116,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,005.12 : 215,286.44 = 84,385.32 : x
  2. Step 2: Convert to fraction form
    156,005.12/215,286.44 = 84,385.32/x
  3. Step 3: Cross multiply
    156,005.12x = 215,286.44 × 84,385.32
  4. Step 4: Simplify right side
    156,005.12x = 18,167,015,131.06
  5. Step 5: Solve for x
    x = 18,167,015,131.06/156,005.12
  6. Step 6: Final answer
    x = 116,451.40

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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.