Home / 172,492.07-258,650.62-78,917.63

Finding the Fourth Proportional to 172,492.07, 258,650.62 and 78,917.63

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Solution

The fourth proportional to 172,492.07, 258,650.62 and 78,917.63 is: 118,336.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,492.07 : 258,650.62 = 78,917.63 : x
  2. Step 2: Convert to fraction form
    172,492.07/258,650.62 = 78,917.63/x
  3. Step 3: Cross multiply
    172,492.07x = 258,650.62 × 78,917.63
  4. Step 4: Simplify right side
    172,492.07x = 20,412,092,437.88
  5. Step 5: Solve for x
    x = 20,412,092,437.88/172,492.07
  6. Step 6: Final answer
    x = 118,336.41

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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.