Home / 100,814.12-151,243.13-30,691.61

Finding the Fourth Proportional to 100,814.12, 151,243.13 and 30,691.61

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Solution

The fourth proportional to 100,814.12, 151,243.13 and 30,691.61 is: 46,044.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,814.12 : 151,243.13 = 30,691.61 : x
  2. Step 2: Convert to fraction form
    100,814.12/151,243.13 = 30,691.61/x
  3. Step 3: Cross multiply
    100,814.12x = 151,243.13 × 30,691.61
  4. Step 4: Simplify right side
    100,814.12x = 4,641,895,899.56
  5. Step 5: Solve for x
    x = 4,641,895,899.56/100,814.12
  6. Step 6: Final answer
    x = 46,044.10

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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.