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Finding the Fourth Proportional to 112,580.55, 168,620.67 and 80,895.51

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Solution

The fourth proportional to 112,580.55, 168,620.67 and 80,895.51 is: 121,163.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,580.55 : 168,620.67 = 80,895.51 : x
  2. Step 2: Convert to fraction form
    112,580.55/168,620.67 = 80,895.51/x
  3. Step 3: Cross multiply
    112,580.55x = 168,620.67 × 80,895.51
  4. Step 4: Simplify right side
    112,580.55x = 13,640,655,096.19
  5. Step 5: Solve for x
    x = 13,640,655,096.19/112,580.55
  6. Step 6: Final answer
    x = 121,163.51

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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.