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Finding the Fourth Proportional to 133,045.62, 183,606.80 and 72,620.13

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Solution

The fourth proportional to 133,045.62, 183,606.80 and 72,620.13 is: 100,217.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,045.62 : 183,606.80 = 72,620.13 : x
  2. Step 2: Convert to fraction form
    133,045.62/183,606.80 = 72,620.13/x
  3. Step 3: Cross multiply
    133,045.62x = 183,606.80 × 72,620.13
  4. Step 4: Simplify right side
    133,045.62x = 13,333,549,321.78
  5. Step 5: Solve for x
    x = 13,333,549,321.78/133,045.62
  6. Step 6: Final answer
    x = 100,217.88

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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.