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Finding the Fourth Proportional to 133,188.59, 183,812.90 and 72,768.30

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Solution

The fourth proportional to 133,188.59, 183,812.90 and 72,768.30 is: 100,427.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,188.59 : 183,812.90 = 72,768.30 : x
  2. Step 2: Convert to fraction form
    133,188.59/183,812.90 = 72,768.30/x
  3. Step 3: Cross multiply
    133,188.59x = 183,812.90 × 72,768.30
  4. Step 4: Simplify right side
    133,188.59x = 13,375,751,887.23
  5. Step 5: Solve for x
    x = 13,375,751,887.23/133,188.59
  6. Step 6: Final answer
    x = 100,427.16

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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.