Home / 123,309.45-170,166.30-66,719.61

Finding the Fourth Proportional to 123,309.45, 170,166.30 and 66,719.61

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Solution

The fourth proportional to 123,309.45, 170,166.30 and 66,719.61 is: 92,072.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,309.45 : 170,166.30 = 66,719.61 : x
  2. Step 2: Convert to fraction form
    123,309.45/170,166.30 = 66,719.61/x
  3. Step 3: Cross multiply
    123,309.45x = 170,166.30 × 66,719.61
  4. Step 4: Simplify right side
    123,309.45x = 11,353,429,171.14
  5. Step 5: Solve for x
    x = 11,353,429,171.14/123,309.45
  6. Step 6: Final answer
    x = 92,072.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.