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Finding the Fourth Proportional to 103,394.56, 155,092.65 and 56,621.92

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Solution

The fourth proportional to 103,394.56, 155,092.65 and 56,621.92 is: 84,933.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,394.56 : 155,092.65 = 56,621.92 : x
  2. Step 2: Convert to fraction form
    103,394.56/155,092.65 = 56,621.92/x
  3. Step 3: Cross multiply
    103,394.56x = 155,092.65 × 56,621.92
  4. Step 4: Simplify right side
    103,394.56x = 8,781,643,620.89
  5. Step 5: Solve for x
    x = 8,781,643,620.89/103,394.56
  6. Step 6: Final answer
    x = 84,933.32

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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.