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Finding the Fourth Proportional to 133,338.60, 199,748.70 and 74,068.20

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Solution

The fourth proportional to 133,338.60, 199,748.70 and 74,068.20 is: 110,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,338.60 : 199,748.70 = 74,068.20 : x
  2. Step 2: Convert to fraction form
    133,338.60/199,748.70 = 74,068.20/x
  3. Step 3: Cross multiply
    133,338.60x = 199,748.70 × 74,068.20
  4. Step 4: Simplify right side
    133,338.60x = 14,795,026,661.34
  5. Step 5: Solve for x
    x = 14,795,026,661.34/133,338.60
  6. Step 6: Final answer
    x = 110,958.32

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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.