Home / 148,871.90-205,440.73-80,889.92

Finding the Fourth Proportional to 148,871.90, 205,440.73 and 80,889.92

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Solution

The fourth proportional to 148,871.90, 205,440.73 and 80,889.92 is: 111,626.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,871.90 : 205,440.73 = 80,889.92 : x
  2. Step 2: Convert to fraction form
    148,871.90/205,440.73 = 80,889.92/x
  3. Step 3: Cross multiply
    148,871.90x = 205,440.73 × 80,889.92
  4. Step 4: Simplify right side
    148,871.90x = 16,618,084,214.44
  5. Step 5: Solve for x
    x = 16,618,084,214.44/148,871.90
  6. Step 6: Final answer
    x = 111,626.74

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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.