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Finding the Fourth Proportional to 137,274.41, 189,440.70 and 79,099.07

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Solution

The fourth proportional to 137,274.41, 189,440.70 and 79,099.07 is: 109,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,274.41 : 189,440.70 = 79,099.07 : x
  2. Step 2: Convert to fraction form
    137,274.41/189,440.70 = 79,099.07/x
  3. Step 3: Cross multiply
    137,274.41x = 189,440.70 × 79,099.07
  4. Step 4: Simplify right side
    137,274.41x = 14,984,583,011.93
  5. Step 5: Solve for x
    x = 14,984,583,011.93/137,274.41
  6. Step 6: Final answer
    x = 109,157.88

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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.