Home / 143,128.12-214,698-36,514.84

Finding the Fourth Proportional to 143,128.12, 214,698 and 36,514.84

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Solution

The fourth proportional to 143,128.12, 214,698 and 36,514.84 is: 54,773.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,128.12 : 214,698 = 36,514.84 : x
  2. Step 2: Convert to fraction form
    143,128.12/214,698 = 36,514.84/x
  3. Step 3: Cross multiply
    143,128.12x = 214,698 × 36,514.84
  4. Step 4: Simplify right side
    143,128.12x = 7,839,663,118.32
  5. Step 5: Solve for x
    x = 7,839,663,118.32/143,128.12
  6. Step 6: Final answer
    x = 54,773.74

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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.