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Finding the Fourth Proportional to 112,218.80, 167,890.80 and 72,852.80

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Solution

The fourth proportional to 112,218.80, 167,890.80 and 72,852.80 is: 108,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,218.80 : 167,890.80 = 72,852.80 : x
  2. Step 2: Convert to fraction form
    112,218.80/167,890.80 = 72,852.80/x
  3. Step 3: Cross multiply
    112,218.80x = 167,890.80 × 72,852.80
  4. Step 4: Simplify right side
    112,218.80x = 12,231,314,874.24
  5. Step 5: Solve for x
    x = 12,231,314,874.24/112,218.80
  6. Step 6: Final answer
    x = 108,995.24

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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.