Home / 111,443.20-153,792-61,143.04

Finding the Fourth Proportional to 111,443.20, 153,792 and 61,143.04

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Solution

The fourth proportional to 111,443.20, 153,792 and 61,143.04 is: 84,377.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,443.20 : 153,792 = 61,143.04 : x
  2. Step 2: Convert to fraction form
    111,443.20/153,792 = 61,143.04/x
  3. Step 3: Cross multiply
    111,443.20x = 153,792 × 61,143.04
  4. Step 4: Simplify right side
    111,443.20x = 9,403,310,407.68
  5. Step 5: Solve for x
    x = 9,403,310,407.68/111,443.20
  6. Step 6: Final answer
    x = 84,377.61

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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.