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Finding the Fourth Proportional to 137,393.43, 189,570.15 and 79,997.46

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Solution

The fourth proportional to 137,393.43, 189,570.15 and 79,997.46 is: 110,377.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,393.43 : 189,570.15 = 79,997.46 : x
  2. Step 2: Convert to fraction form
    137,393.43/189,570.15 = 79,997.46/x
  3. Step 3: Cross multiply
    137,393.43x = 189,570.15 × 79,997.46
  4. Step 4: Simplify right side
    137,393.43x = 15,165,130,491.82
  5. Step 5: Solve for x
    x = 15,165,130,491.82/137,393.43
  6. Step 6: Final answer
    x = 110,377.41

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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.