Home / 148,889.16-205,467.30-80,905.50

Finding the Fourth Proportional to 148,889.16, 205,467.30 and 80,905.50

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Solution

The fourth proportional to 148,889.16, 205,467.30 and 80,905.50 is: 111,649.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,889.16 : 205,467.30 = 80,905.50 : x
  2. Step 2: Convert to fraction form
    148,889.16/205,467.30 = 80,905.50/x
  3. Step 3: Cross multiply
    148,889.16x = 205,467.30 × 80,905.50
  4. Step 4: Simplify right side
    148,889.16x = 16,623,434,640.15
  5. Step 5: Solve for x
    x = 16,623,434,640.15/148,889.16
  6. Step 6: Final answer
    x = 111,649.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.