Home / 156,467.27-215,921-84,845.45

Finding the Fourth Proportional to 156,467.27, 215,921 and 84,845.45

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Solution

The fourth proportional to 156,467.27, 215,921 and 84,845.45 is: 117,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,467.27 : 215,921 = 84,845.45 : x
  2. Step 2: Convert to fraction form
    156,467.27/215,921 = 84,845.45/x
  3. Step 3: Cross multiply
    156,467.27x = 215,921 × 84,845.45
  4. Step 4: Simplify right side
    156,467.27x = 18,319,914,409.45
  5. Step 5: Solve for x
    x = 18,319,914,409.45/156,467.27
  6. Step 6: Final answer
    x = 117,084.64

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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.