Home / 272,414.76-408,739.67-103,985.66

Finding the Fourth Proportional to 272,414.76, 408,739.67 and 103,985.66

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Solution

The fourth proportional to 272,414.76, 408,739.67 and 103,985.66 is: 156,023.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,414.76 : 408,739.67 = 103,985.66 : x
  2. Step 2: Convert to fraction form
    272,414.76/408,739.67 = 103,985.66/x
  3. Step 3: Cross multiply
    272,414.76x = 408,739.67 × 103,985.66
  4. Step 4: Simplify right side
    272,414.76x = 42,503,061,789.51
  5. Step 5: Solve for x
    x = 42,503,061,789.51/272,414.76
  6. Step 6: Final answer
    x = 156,023.34

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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.