Home / 172,529.06-258,835.11-72,717.80

Finding the Fourth Proportional to 172,529.06, 258,835.11 and 72,717.80

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Solution

The fourth proportional to 172,529.06, 258,835.11 and 72,717.80 is: 109,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,529.06 : 258,835.11 = 72,717.80 : x
  2. Step 2: Convert to fraction form
    172,529.06/258,835.11 = 72,717.80/x
  3. Step 3: Cross multiply
    172,529.06x = 258,835.11 × 72,717.80
  4. Step 4: Simplify right side
    172,529.06x = 18,821,919,114.87
  5. Step 5: Solve for x
    x = 18,821,919,114.87/172,529.06
  6. Step 6: Final answer
    x = 109,094.20

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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.