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Finding the Fourth Proportional to 100,353, 138,491.46 and 60,059.10

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Solution

The fourth proportional to 100,353, 138,491.46 and 60,059.10 is: 82,884.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,353 : 138,491.46 = 60,059.10 : x
  2. Step 2: Convert to fraction form
    100,353/138,491.46 = 60,059.10/x
  3. Step 3: Cross multiply
    100,353x = 138,491.46 × 60,059.10
  4. Step 4: Simplify right side
    100,353x = 8,317,672,445.29
  5. Step 5: Solve for x
    x = 8,317,672,445.29/100,353
  6. Step 6: Final answer
    x = 82,884.14

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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.