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Finding the Fourth Proportional to 202,079.67, 278,863.52 and 111,439.45

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Solution

The fourth proportional to 202,079.67, 278,863.52 and 111,439.45 is: 153,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,079.67 : 278,863.52 = 111,439.45 : x
  2. Step 2: Convert to fraction form
    202,079.67/278,863.52 = 111,439.45/x
  3. Step 3: Cross multiply
    202,079.67x = 278,863.52 × 111,439.45
  4. Step 4: Simplify right side
    202,079.67x = 31,076,397,293.86
  5. Step 5: Solve for x
    x = 31,076,397,293.86/202,079.67
  6. Step 6: Final answer
    x = 153,782.90

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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.