Home / 156,971.45-235,511.85-68,288.60

Finding the Fourth Proportional to 156,971.45, 235,511.85 and 68,288.60

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Solution

The fourth proportional to 156,971.45, 235,511.85 and 68,288.60 is: 102,456.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.45 : 235,511.85 = 68,288.60 : x
  2. Step 2: Convert to fraction form
    156,971.45/235,511.85 = 68,288.60/x
  3. Step 3: Cross multiply
    156,971.45x = 235,511.85 × 68,288.60
  4. Step 4: Simplify right side
    156,971.45x = 16,082,774,519.91
  5. Step 5: Solve for x
    x = 16,082,774,519.91/156,971.45
  6. Step 6: Final answer
    x = 102,456.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.