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Finding the Fourth Proportional to 92,401.46, 138,835.74 and 88,664.78

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Solution

The fourth proportional to 92,401.46, 138,835.74 and 88,664.78 is: 133,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,401.46 : 138,835.74 = 88,664.78 : x
  2. Step 2: Convert to fraction form
    92,401.46/138,835.74 = 88,664.78/x
  3. Step 3: Cross multiply
    92,401.46x = 138,835.74 × 88,664.78
  4. Step 4: Simplify right side
    92,401.46x = 12,309,840,343.24
  5. Step 5: Solve for x
    x = 12,309,840,343.24/92,401.46
  6. Step 6: Final answer
    x = 133,221.28

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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.