Home / 156,410.10-215,847.05-84,791.25

Finding the Fourth Proportional to 156,410.10, 215,847.05 and 84,791.25

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Solution

The fourth proportional to 156,410.10, 215,847.05 and 84,791.25 is: 117,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,410.10 : 215,847.05 = 84,791.25 : x
  2. Step 2: Convert to fraction form
    156,410.10/215,847.05 = 84,791.25/x
  3. Step 3: Cross multiply
    156,410.10x = 215,847.05 × 84,791.25
  4. Step 4: Simplify right side
    156,410.10x = 18,301,940,754.36
  5. Step 5: Solve for x
    x = 18,301,940,754.36/156,410.10
  6. Step 6: Final answer
    x = 117,012.53

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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.