Home / 111,272.30-166,908.45-81,529.10

Finding the Fourth Proportional to 111,272.30, 166,908.45 and 81,529.10

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Solution

The fourth proportional to 111,272.30, 166,908.45 and 81,529.10 is: 122,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,272.30 : 166,908.45 = 81,529.10 : x
  2. Step 2: Convert to fraction form
    111,272.30/166,908.45 = 81,529.10/x
  3. Step 3: Cross multiply
    111,272.30x = 166,908.45 × 81,529.10
  4. Step 4: Simplify right side
    111,272.30x = 13,607,895,710.90
  5. Step 5: Solve for x
    x = 13,607,895,710.90/111,272.30
  6. Step 6: Final answer
    x = 122,293.65

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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.