Home / 156,974.30-216,623.41-85,354.37

Finding the Fourth Proportional to 156,974.30, 216,623.41 and 85,354.37

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Solution

The fourth proportional to 156,974.30, 216,623.41 and 85,354.37 is: 117,788.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.30 : 216,623.41 = 85,354.37 : x
  2. Step 2: Convert to fraction form
    156,974.30/216,623.41 = 85,354.37/x
  3. Step 3: Cross multiply
    156,974.30x = 216,623.41 × 85,354.37
  4. Step 4: Simplify right side
    156,974.30x = 18,489,754,687.80
  5. Step 5: Solve for x
    x = 18,489,754,687.80/156,974.30
  6. Step 6: Final answer
    x = 117,788.42

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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.