Home / 111,181.17-166,771.40-85,917.36

Finding the Fourth Proportional to 111,181.17, 166,771.40 and 85,917.36

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Solution

The fourth proportional to 111,181.17, 166,771.40 and 85,917.36 is: 128,875.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,181.17 : 166,771.40 = 85,917.36 : x
  2. Step 2: Convert to fraction form
    111,181.17/166,771.40 = 85,917.36/x
  3. Step 3: Cross multiply
    111,181.17x = 166,771.40 × 85,917.36
  4. Step 4: Simplify right side
    111,181.17x = 14,328,557,981.92
  5. Step 5: Solve for x
    x = 14,328,557,981.92/111,181.17
  6. Step 6: Final answer
    x = 128,875.76

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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.