Home / 112,940.85-169,421.76-80,618.37

Finding the Fourth Proportional to 112,940.85, 169,421.76 and 80,618.37

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Solution

The fourth proportional to 112,940.85, 169,421.76 and 80,618.37 is: 120,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,940.85 : 169,421.76 = 80,618.37 : x
  2. Step 2: Convert to fraction form
    112,940.85/169,421.76 = 80,618.37/x
  3. Step 3: Cross multiply
    112,940.85x = 169,421.76 × 80,618.37
  4. Step 4: Simplify right side
    112,940.85x = 13,658,506,133.73
  5. Step 5: Solve for x
    x = 13,658,506,133.73/112,940.85
  6. Step 6: Final answer
    x = 120,935.04

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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.