Home / 156,974.45-216,623.61-85,354.52

Finding the Fourth Proportional to 156,974.45, 216,623.61 and 85,354.52

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Solution

The fourth proportional to 156,974.45, 216,623.61 and 85,354.52 is: 117,788.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.45 : 216,623.61 = 85,354.52 : x
  2. Step 2: Convert to fraction form
    156,974.45/216,623.61 = 85,354.52/x
  3. Step 3: Cross multiply
    156,974.45x = 216,623.61 × 85,354.52
  4. Step 4: Simplify right side
    156,974.45x = 18,489,803,169.10
  5. Step 5: Solve for x
    x = 18,489,803,169.10/156,974.45
  6. Step 6: Final answer
    x = 117,788.62

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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.