Home / 156,930.20-216,542.46-100,301.40

Finding the Fourth Proportional to 156,930.20, 216,542.46 and 100,301.40

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Solution

The fourth proportional to 156,930.20, 216,542.46 and 100,301.40 is: 138,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.20 : 216,542.46 = 100,301.40 : x
  2. Step 2: Convert to fraction form
    156,930.20/216,542.46 = 100,301.40/x
  3. Step 3: Cross multiply
    156,930.20x = 216,542.46 × 100,301.40
  4. Step 4: Simplify right side
    156,930.20x = 21,719,511,897.44
  5. Step 5: Solve for x
    x = 21,719,511,897.44/156,930.20
  6. Step 6: Final answer
    x = 138,402.37

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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.