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Finding the Fourth Proportional to 133,105.88, 183,680.88 and 72,679.08

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Solution

The fourth proportional to 133,105.88, 183,680.88 and 72,679.08 is: 100,294.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,105.88 : 183,680.88 = 72,679.08 : x
  2. Step 2: Convert to fraction form
    133,105.88/183,680.88 = 72,679.08/x
  3. Step 3: Cross multiply
    133,105.88x = 183,680.88 × 72,679.08
  4. Step 4: Simplify right side
    133,105.88x = 13,349,757,371.99
  5. Step 5: Solve for x
    x = 13,349,757,371.99/133,105.88
  6. Step 6: Final answer
    x = 100,294.27

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1.5x scale

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.