Home / 156,239.20-215,623.36-88,268.64

Finding the Fourth Proportional to 156,239.20, 215,623.36 and 88,268.64

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Solution

The fourth proportional to 156,239.20, 215,623.36 and 88,268.64 is: 121,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,239.20 : 215,623.36 = 88,268.64 : x
  2. Step 2: Convert to fraction form
    156,239.20/215,623.36 = 88,268.64/x
  3. Step 3: Cross multiply
    156,239.20x = 215,623.36 × 88,268.64
  4. Step 4: Simplify right side
    156,239.20x = 19,032,780,739.43
  5. Step 5: Solve for x
    x = 19,032,780,739.43/156,239.20
  6. Step 6: Final answer
    x = 121,818.22

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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.