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Finding the Fourth Proportional to 172,974.16, 259,461.24 and 79,558.48

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Solution

The fourth proportional to 172,974.16, 259,461.24 and 79,558.48 is: 119,337.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,974.16 : 259,461.24 = 79,558.48 : x
  2. Step 2: Convert to fraction form
    172,974.16/259,461.24 = 79,558.48/x
  3. Step 3: Cross multiply
    172,974.16x = 259,461.24 × 79,558.48
  4. Step 4: Simplify right side
    172,974.16x = 20,642,341,873.32
  5. Step 5: Solve for x
    x = 20,642,341,873.32/172,974.16
  6. Step 6: Final answer
    x = 119,337.72

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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.