Home / 123,219.21-170,042.52-66,630.59

Finding the Fourth Proportional to 123,219.21, 170,042.52 and 66,630.59

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Solution

The fourth proportional to 123,219.21, 170,042.52 and 66,630.59 is: 91,950.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,219.21 : 170,042.52 = 66,630.59 : x
  2. Step 2: Convert to fraction form
    123,219.21/170,042.52 = 66,630.59/x
  3. Step 3: Cross multiply
    123,219.21x = 170,042.52 × 66,630.59
  4. Step 4: Simplify right side
    123,219.21x = 11,330,033,432.69
  5. Step 5: Solve for x
    x = 11,330,033,432.69/123,219.21
  6. Step 6: Final answer
    x = 91,950.22

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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.