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Finding the Fourth Proportional to 156,030, 215,324.64 and 92,344.56

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Solution

The fourth proportional to 156,030, 215,324.64 and 92,344.56 is: 127,437.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,030 : 215,324.64 = 92,344.56 : x
  2. Step 2: Convert to fraction form
    156,030/215,324.64 = 92,344.56/x
  3. Step 3: Cross multiply
    156,030x = 215,324.64 × 92,344.56
  4. Step 4: Simplify right side
    156,030x = 19,884,059,137.96
  5. Step 5: Solve for x
    x = 19,884,059,137.96/156,030
  6. Step 6: Final answer
    x = 127,437.41

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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.