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Finding the Fourth Proportional to 103,390.74, 155,117.26 and 36,822.21

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Solution

The fourth proportional to 103,390.74, 155,117.26 and 36,822.21 is: 55,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,390.74 : 155,117.26 = 36,822.21 : x
  2. Step 2: Convert to fraction form
    103,390.74/155,117.26 = 36,822.21/x
  3. Step 3: Cross multiply
    103,390.74x = 155,117.26 × 36,822.21
  4. Step 4: Simplify right side
    103,390.74x = 5,711,759,786.68
  5. Step 5: Solve for x
    x = 5,711,759,786.68/103,390.74
  6. Step 6: Final answer
    x = 55,244.40

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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.