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Finding the Fourth Proportional to 133,246.53, 183,879.81 and 72,817.56

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Solution

The fourth proportional to 133,246.53, 183,879.81 and 72,817.56 is: 100,488.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,246.53 : 183,879.81 = 72,817.56 : x
  2. Step 2: Convert to fraction form
    133,246.53/183,879.81 = 72,817.56/x
  3. Step 3: Cross multiply
    133,246.53x = 183,879.81 × 72,817.56
  4. Step 4: Simplify right side
    133,246.53x = 13,389,679,097.46
  5. Step 5: Solve for x
    x = 13,389,679,097.46/133,246.53
  6. Step 6: Final answer
    x = 100,488.01

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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.