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Finding the Fourth Proportional to 144,514.51, 216,591.21 and 69,620.69

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Solution

The fourth proportional to 144,514.51, 216,591.21 and 69,620.69 is: 104,344.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,514.51 : 216,591.21 = 69,620.69 : x
  2. Step 2: Convert to fraction form
    144,514.51/216,591.21 = 69,620.69/x
  3. Step 3: Cross multiply
    144,514.51x = 216,591.21 × 69,620.69
  4. Step 4: Simplify right side
    144,514.51x = 15,079,229,488.13
  5. Step 5: Solve for x
    x = 15,079,229,488.13/144,514.51
  6. Step 6: Final answer
    x = 104,344.05

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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.