Home / 111,208.80-166,586.40-68,959.20

Finding the Fourth Proportional to 111,208.80, 166,586.40 and 68,959.20

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Solution

The fourth proportional to 111,208.80, 166,586.40 and 68,959.20 is: 103,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,208.80 : 166,586.40 = 68,959.20 : x
  2. Step 2: Convert to fraction form
    111,208.80/166,586.40 = 68,959.20/x
  3. Step 3: Cross multiply
    111,208.80x = 166,586.40 × 68,959.20
  4. Step 4: Simplify right side
    111,208.80x = 11,487,664,874.88
  5. Step 5: Solve for x
    x = 11,487,664,874.88/111,208.80
  6. Step 6: Final answer
    x = 103,298.16

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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.