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Finding the Fourth Proportional to 103,705.80, 155,169.90 and 94,374.60

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Solution

The fourth proportional to 103,705.80, 155,169.90 and 94,374.60 is: 141,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,705.80 : 155,169.90 = 94,374.60 : x
  2. Step 2: Convert to fraction form
    103,705.80/155,169.90 = 94,374.60/x
  3. Step 3: Cross multiply
    103,705.80x = 155,169.90 × 94,374.60
  4. Step 4: Simplify right side
    103,705.80x = 14,644,097,244.54
  5. Step 5: Solve for x
    x = 14,644,097,244.54/103,705.80
  6. Step 6: Final answer
    x = 141,208.08

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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.