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Finding the Fourth Proportional to 103,673.62, 155,491.59 and 28,774.94

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Solution

The fourth proportional to 103,673.62, 155,491.59 and 28,774.94 is: 43,157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,673.62 : 155,491.59 = 28,774.94 : x
  2. Step 2: Convert to fraction form
    103,673.62/155,491.59 = 28,774.94/x
  3. Step 3: Cross multiply
    103,673.62x = 155,491.59 × 28,774.94
  4. Step 4: Simplify right side
    103,673.62x = 4,474,261,172.75
  5. Step 5: Solve for x
    x = 4,474,261,172.75/103,673.62
  6. Step 6: Final answer
    x = 43,157.18

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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.