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Finding the Fourth Proportional to 113,517.96, 156,670.38 and 68,805.96

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Solution

The fourth proportional to 113,517.96, 156,670.38 and 68,805.96 is: 94,961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,517.96 : 156,670.38 = 68,805.96 : x
  2. Step 2: Convert to fraction form
    113,517.96/156,670.38 = 68,805.96/x
  3. Step 3: Cross multiply
    113,517.96x = 156,670.38 × 68,805.96
  4. Step 4: Simplify right side
    113,517.96x = 10,779,855,899.46
  5. Step 5: Solve for x
    x = 10,779,855,899.46/113,517.96
  6. Step 6: Final answer
    x = 94,961.68

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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.