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Finding the Fourth Proportional to 141,415.52, 211,661.74 and 103,965.68

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Solution

The fourth proportional to 141,415.52, 211,661.74 and 103,965.68 is: 155,609.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,415.52 : 211,661.74 = 103,965.68 : x
  2. Step 2: Convert to fraction form
    141,415.52/211,661.74 = 103,965.68/x
  3. Step 3: Cross multiply
    141,415.52x = 211,661.74 × 103,965.68
  4. Step 4: Simplify right side
    141,415.52x = 22,005,556,729.08
  5. Step 5: Solve for x
    x = 22,005,556,729.08/141,415.52
  6. Step 6: Final answer
    x = 155,609.21

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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.