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Finding the Fourth Proportional to 191,991.40, 287,850.46 and 73,562.60

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Solution

The fourth proportional to 191,991.40, 287,850.46 and 73,562.60 is: 110,291.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,991.40 : 287,850.46 = 73,562.60 : x
  2. Step 2: Convert to fraction form
    191,991.40/287,850.46 = 73,562.60/x
  3. Step 3: Cross multiply
    191,991.40x = 287,850.46 × 73,562.60
  4. Step 4: Simplify right side
    191,991.40x = 21,175,028,248.80
  5. Step 5: Solve for x
    x = 21,175,028,248.80/191,991.40
  6. Step 6: Final answer
    x = 110,291.55

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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.