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Finding the Fourth Proportional to 156,230.64, 215,597.07 and 84,609

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Solution

The fourth proportional to 156,230.64, 215,597.07 and 84,609 is: 116,759.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,230.64 : 215,597.07 = 84,609 : x
  2. Step 2: Convert to fraction form
    156,230.64/215,597.07 = 84,609/x
  3. Step 3: Cross multiply
    156,230.64x = 215,597.07 × 84,609
  4. Step 4: Simplify right side
    156,230.64x = 18,241,452,495.63
  5. Step 5: Solve for x
    x = 18,241,452,495.63/156,230.64
  6. Step 6: Final answer
    x = 116,759.76

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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.