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Finding the Fourth Proportional to 126,484.43, 189,672.64 and 73,213.18

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Solution

The fourth proportional to 126,484.43, 189,672.64 and 73,213.18 is: 109,788.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,484.43 : 189,672.64 = 73,213.18 : x
  2. Step 2: Convert to fraction form
    126,484.43/189,672.64 = 73,213.18/x
  3. Step 3: Cross multiply
    126,484.43x = 189,672.64 × 73,213.18
  4. Step 4: Simplify right side
    126,484.43x = 13,886,537,543.09
  5. Step 5: Solve for x
    x = 13,886,537,543.09/126,484.43
  6. Step 6: Final answer
    x = 109,788.52

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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.