Home / 156,160.08-215,501-84,540.12

Finding the Fourth Proportional to 156,160.08, 215,501 and 84,540.12

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Solution

The fourth proportional to 156,160.08, 215,501 and 84,540.12 is: 116,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,160.08 : 215,501 = 84,540.12 : x
  2. Step 2: Convert to fraction form
    156,160.08/215,501 = 84,540.12/x
  3. Step 3: Cross multiply
    156,160.08x = 215,501 × 84,540.12
  4. Step 4: Simplify right side
    156,160.08x = 18,218,480,400.12
  5. Step 5: Solve for x
    x = 18,218,480,400.12/156,160.08
  6. Step 6: Final answer
    x = 116,665.41

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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.