Home / 108,787.11-163,188.56-45,543.62

Finding the Fourth Proportional to 108,787.11, 163,188.56 and 45,543.62

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Solution

The fourth proportional to 108,787.11, 163,188.56 and 45,543.62 is: 68,318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,787.11 : 163,188.56 = 45,543.62 : x
  2. Step 2: Convert to fraction form
    108,787.11/163,188.56 = 45,543.62/x
  3. Step 3: Cross multiply
    108,787.11x = 163,188.56 × 45,543.62
  4. Step 4: Simplify right side
    108,787.11x = 7,432,197,764.99
  5. Step 5: Solve for x
    x = 7,432,197,764.99/108,787.11
  6. Step 6: Final answer
    x = 68,318.74

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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.