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Finding the Fourth Proportional to 133,266.60, 199,972.80 and 54,437.40

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Solution

The fourth proportional to 133,266.60, 199,972.80 and 54,437.40 is: 81,685.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,266.60 : 199,972.80 = 54,437.40 : x
  2. Step 2: Convert to fraction form
    133,266.60/199,972.80 = 54,437.40/x
  3. Step 3: Cross multiply
    133,266.60x = 199,972.80 × 54,437.40
  4. Step 4: Simplify right side
    133,266.60x = 10,885,999,302.72
  5. Step 5: Solve for x
    x = 10,885,999,302.72/133,266.60
  6. Step 6: Final answer
    x = 81,685.88

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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.