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Finding the Fourth Proportional to 103,613.01, 155,419.52 and 68,544.47

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Solution

The fourth proportional to 103,613.01, 155,419.52 and 68,544.47 is: 102,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.01 : 155,419.52 = 68,544.47 : x
  2. Step 2: Convert to fraction form
    103,613.01/155,419.52 = 68,544.47/x
  3. Step 3: Cross multiply
    103,613.01x = 155,419.52 × 68,544.47
  4. Step 4: Simplify right side
    103,613.01x = 10,653,147,506.23
  5. Step 5: Solve for x
    x = 10,653,147,506.23/103,613.01
  6. Step 6: Final answer
    x = 102,816.70

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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.