Home / 115,271.10-172,906.65-68,499.90

Finding the Fourth Proportional to 115,271.10, 172,906.65 and 68,499.90

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Solution

The fourth proportional to 115,271.10, 172,906.65 and 68,499.90 is: 102,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,271.10 : 172,906.65 = 68,499.90 : x
  2. Step 2: Convert to fraction form
    115,271.10/172,906.65 = 68,499.90/x
  3. Step 3: Cross multiply
    115,271.10x = 172,906.65 × 68,499.90
  4. Step 4: Simplify right side
    115,271.10x = 11,844,088,234.34
  5. Step 5: Solve for x
    x = 11,844,088,234.34/115,271.10
  6. Step 6: Final answer
    x = 102,749.85

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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.