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Finding the Fourth Proportional to 103,468.13, 155,200.63 and 28,586.60

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Solution

The fourth proportional to 103,468.13, 155,200.63 and 28,586.60 is: 42,879.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,468.13 : 155,200.63 = 28,586.60 : x
  2. Step 2: Convert to fraction form
    103,468.13/155,200.63 = 28,586.60/x
  3. Step 3: Cross multiply
    103,468.13x = 155,200.63 × 28,586.60
  4. Step 4: Simplify right side
    103,468.13x = 4,436,658,329.56
  5. Step 5: Solve for x
    x = 4,436,658,329.56/103,468.13
  6. Step 6: Final answer
    x = 42,879.47

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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.