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Finding the Fourth Proportional to 108,512.30, 162,768.45 and 89,849.90

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Solution

The fourth proportional to 108,512.30, 162,768.45 and 89,849.90 is: 134,774.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,512.30 : 162,768.45 = 89,849.90 : x
  2. Step 2: Convert to fraction form
    108,512.30/162,768.45 = 89,849.90/x
  3. Step 3: Cross multiply
    108,512.30x = 162,768.45 × 89,849.90
  4. Step 4: Simplify right side
    108,512.30x = 14,624,728,955.66
  5. Step 5: Solve for x
    x = 14,624,728,955.66/108,512.30
  6. Step 6: Final answer
    x = 134,774.85

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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.