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Finding the Fourth Proportional to 141,321.52, 211,520.85 and 103,871.71

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Solution

The fourth proportional to 141,321.52, 211,520.85 and 103,871.71 is: 155,468.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,321.52 : 211,520.85 = 103,871.71 : x
  2. Step 2: Convert to fraction form
    141,321.52/211,520.85 = 103,871.71/x
  3. Step 3: Cross multiply
    141,321.52x = 211,520.85 × 103,871.71
  4. Step 4: Simplify right side
    141,321.52x = 21,971,032,390.15
  5. Step 5: Solve for x
    x = 21,971,032,390.15/141,321.52
  6. Step 6: Final answer
    x = 155,468.41

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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.