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Finding the Fourth Proportional to 92,414.84, 137,953.78 and 81,204.71

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Solution

The fourth proportional to 92,414.84, 137,953.78 and 81,204.71 is: 121,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,414.84 : 137,953.78 = 81,204.71 : x
  2. Step 2: Convert to fraction form
    92,414.84/137,953.78 = 81,204.71/x
  3. Step 3: Cross multiply
    92,414.84x = 137,953.78 × 81,204.71
  4. Step 4: Simplify right side
    92,414.84x = 11,202,496,698.30
  5. Step 5: Solve for x
    x = 11,202,496,698.30/92,414.84
  6. Step 6: Final answer
    x = 121,219.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.