Home / 123,456.91-170,384.36-69,745.38

Finding the Fourth Proportional to 123,456.91, 170,384.36 and 69,745.38

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Solution

The fourth proportional to 123,456.91, 170,384.36 and 69,745.38 is: 96,256.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,456.91 : 170,384.36 = 69,745.38 : x
  2. Step 2: Convert to fraction form
    123,456.91/170,384.36 = 69,745.38/x
  3. Step 3: Cross multiply
    123,456.91x = 170,384.36 × 69,745.38
  4. Step 4: Simplify right side
    123,456.91x = 11,883,521,585.53
  5. Step 5: Solve for x
    x = 11,883,521,585.53/123,456.91
  6. Step 6: Final answer
    x = 96,256.43

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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.