Home / 123,427.28-170,328.66-66,838.65

Finding the Fourth Proportional to 123,427.28, 170,328.66 and 66,838.65

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Solution

The fourth proportional to 123,427.28, 170,328.66 and 66,838.65 is: 92,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,427.28 : 170,328.66 = 66,838.65 : x
  2. Step 2: Convert to fraction form
    123,427.28/170,328.66 = 66,838.65/x
  3. Step 3: Cross multiply
    123,427.28x = 170,328.66 × 66,838.65
  4. Step 4: Simplify right side
    123,427.28x = 11,384,537,759.43
  5. Step 5: Solve for x
    x = 11,384,537,759.43/123,427.28
  6. Step 6: Final answer
    x = 92,236.81

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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.