Home / 272,088.18-408,131.61-72,408.54

Finding the Fourth Proportional to 272,088.18, 408,131.61 and 72,408.54

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Solution

The fourth proportional to 272,088.18, 408,131.61 and 72,408.54 is: 108,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,088.18 : 408,131.61 = 72,408.54 : x
  2. Step 2: Convert to fraction form
    272,088.18/408,131.61 = 72,408.54/x
  3. Step 3: Cross multiply
    272,088.18x = 408,131.61 × 72,408.54
  4. Step 4: Simplify right side
    272,088.18x = 29,552,214,007.95
  5. Step 5: Solve for x
    x = 29,552,214,007.95/272,088.18
  6. Step 6: Final answer
    x = 108,612.63

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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.