Home / 123,197.76-170,012.79-66,609

Finding the Fourth Proportional to 123,197.76, 170,012.79 and 66,609

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Solution

The fourth proportional to 123,197.76, 170,012.79 and 66,609 is: 91,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,197.76 : 170,012.79 = 66,609 : x
  2. Step 2: Convert to fraction form
    123,197.76/170,012.79 = 66,609/x
  3. Step 3: Cross multiply
    123,197.76x = 170,012.79 × 66,609
  4. Step 4: Simplify right side
    123,197.76x = 11,324,381,929.11
  5. Step 5: Solve for x
    x = 11,324,381,929.11/123,197.76
  6. Step 6: Final answer
    x = 91,920.36

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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.