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Finding the Fourth Proportional to 126,523.40, 189,663.60 and 73,160.60

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Solution

The fourth proportional to 126,523.40, 189,663.60 and 73,160.60 is: 109,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,523.40 : 189,663.60 = 73,160.60 : x
  2. Step 2: Convert to fraction form
    126,523.40/189,663.60 = 73,160.60/x
  3. Step 3: Cross multiply
    126,523.40x = 189,663.60 × 73,160.60
  4. Step 4: Simplify right side
    126,523.40x = 13,875,902,774.16
  5. Step 5: Solve for x
    x = 13,875,902,774.16/126,523.40
  6. Step 6: Final answer
    x = 109,670.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.