Home / 156,380.25-215,803.53-84,758.43

Finding the Fourth Proportional to 156,380.25, 215,803.53 and 84,758.43

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Solution

The fourth proportional to 156,380.25, 215,803.53 and 84,758.43 is: 116,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,380.25 : 215,803.53 = 84,758.43 : x
  2. Step 2: Convert to fraction form
    156,380.25/215,803.53 = 84,758.43/x
  3. Step 3: Cross multiply
    156,380.25x = 215,803.53 × 84,758.43
  4. Step 4: Simplify right side
    156,380.25x = 18,291,168,391.26
  5. Step 5: Solve for x
    x = 18,291,168,391.26/156,380.25
  6. Step 6: Final answer
    x = 116,965.97

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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.