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Finding the Fourth Proportional to 100,599.84, 138,819.65 and 58,161.11

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Solution

The fourth proportional to 100,599.84, 138,819.65 and 58,161.11 is: 80,257.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,599.84 : 138,819.65 = 58,161.11 : x
  2. Step 2: Convert to fraction form
    100,599.84/138,819.65 = 58,161.11/x
  3. Step 3: Cross multiply
    100,599.84x = 138,819.65 × 58,161.11
  4. Step 4: Simplify right side
    100,599.84x = 8,073,903,948.91
  5. Step 5: Solve for x
    x = 8,073,903,948.91/100,599.84
  6. Step 6: Final answer
    x = 80,257.62

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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.