Home / 103,613.14-155,419.70-68,544.59

Finding the Fourth Proportional to 103,613.14, 155,419.70 and 68,544.59

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Solution

The fourth proportional to 103,613.14, 155,419.70 and 68,544.59 is: 102,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.14 : 155,419.70 = 68,544.59 : x
  2. Step 2: Convert to fraction form
    103,613.14/155,419.70 = 68,544.59/x
  3. Step 3: Cross multiply
    103,613.14x = 155,419.70 × 68,544.59
  4. Step 4: Simplify right side
    103,613.14x = 10,653,179,614.42
  5. Step 5: Solve for x
    x = 10,653,179,614.42/103,613.14
  6. Step 6: Final answer
    x = 102,816.88

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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.