Home / 156,519.78-215,997.08-84,899.72

Finding the Fourth Proportional to 156,519.78, 215,997.08 and 84,899.72

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Solution

The fourth proportional to 156,519.78, 215,997.08 and 84,899.72 is: 117,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,519.78 : 215,997.08 = 84,899.72 : x
  2. Step 2: Convert to fraction form
    156,519.78/215,997.08 = 84,899.72/x
  3. Step 3: Cross multiply
    156,519.78x = 215,997.08 × 84,899.72
  4. Step 4: Simplify right side
    156,519.78x = 18,338,090,108.33
  5. Step 5: Solve for x
    x = 18,338,090,108.33/156,519.78
  6. Step 6: Final answer
    x = 117,161.49

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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.