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Finding the Fourth Proportional to 133,310.35, 183,967.81 and 72,880.93

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Solution

The fourth proportional to 133,310.35, 183,967.81 and 72,880.93 is: 100,575.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,310.35 : 183,967.81 = 72,880.93 : x
  2. Step 2: Convert to fraction form
    133,310.35/183,967.81 = 72,880.93/x
  3. Step 3: Cross multiply
    133,310.35x = 183,967.81 × 72,880.93
  4. Step 4: Simplify right side
    133,310.35x = 13,407,745,082.86
  5. Step 5: Solve for x
    x = 13,407,745,082.86/133,310.35
  6. Step 6: Final answer
    x = 100,575.42

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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.