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Finding the Fourth Proportional to 69,134.12, 103,701.25 and 19,214.22

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Solution

The fourth proportional to 69,134.12, 103,701.25 and 19,214.22 is: 28,821.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,134.12 : 103,701.25 = 19,214.22 : x
  2. Step 2: Convert to fraction form
    69,134.12/103,701.25 = 19,214.22/x
  3. Step 3: Cross multiply
    69,134.12x = 103,701.25 × 19,214.22
  4. Step 4: Simplify right side
    69,134.12x = 1,992,539,044.67
  5. Step 5: Solve for x
    x = 1,992,539,044.67/69,134.12
  6. Step 6: Final answer
    x = 28,821.36

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1.5x scale

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.