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Finding the Fourth Proportional to 133,246.44, 183,876.96 and 72,817.20

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Solution

The fourth proportional to 133,246.44, 183,876.96 and 72,817.20 is: 100,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,246.44 : 183,876.96 = 72,817.20 : x
  2. Step 2: Convert to fraction form
    133,246.44/183,876.96 = 72,817.20/x
  3. Step 3: Cross multiply
    133,246.44x = 183,876.96 × 72,817.20
  4. Step 4: Simplify right side
    133,246.44x = 13,389,405,371.71
  5. Step 5: Solve for x
    x = 13,389,405,371.71/133,246.44
  6. Step 6: Final answer
    x = 100,486.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.