Home / 123,721.92-185,492-39,433.60

Finding the Fourth Proportional to 123,721.92, 185,492 and 39,433.60

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Solution

The fourth proportional to 123,721.92, 185,492 and 39,433.60 is: 59,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,721.92 : 185,492 = 39,433.60 : x
  2. Step 2: Convert to fraction form
    123,721.92/185,492 = 39,433.60/x
  3. Step 3: Cross multiply
    123,721.92x = 185,492 × 39,433.60
  4. Step 4: Simplify right side
    123,721.92x = 7,314,617,331.20
  5. Step 5: Solve for x
    x = 7,314,617,331.20/123,721.92
  6. Step 6: Final answer
    x = 59,121.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.