Home / 123,219.18-170,042.79-66,630.57

Finding the Fourth Proportional to 123,219.18, 170,042.79 and 66,630.57

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Solution

The fourth proportional to 123,219.18, 170,042.79 and 66,630.57 is: 91,950.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,219.18 : 170,042.79 = 66,630.57 : x
  2. Step 2: Convert to fraction form
    123,219.18/170,042.79 = 66,630.57/x
  3. Step 3: Cross multiply
    123,219.18x = 170,042.79 × 66,630.57
  4. Step 4: Simplify right side
    123,219.18x = 11,330,048,022.09
  5. Step 5: Solve for x
    x = 11,330,048,022.09/123,219.18
  6. Step 6: Final answer
    x = 91,950.36

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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.