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Finding the Fourth Proportional to 84,898, 126,450.18 and 80,457.04

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Solution

The fourth proportional to 84,898, 126,450.18 and 80,457.04 is: 119,835.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,898 : 126,450.18 = 80,457.04 : x
  2. Step 2: Convert to fraction form
    84,898/126,450.18 = 80,457.04/x
  3. Step 3: Cross multiply
    84,898x = 126,450.18 × 80,457.04
  4. Step 4: Simplify right side
    84,898x = 10,173,807,190.27
  5. Step 5: Solve for x
    x = 10,173,807,190.27/84,898
  6. Step 6: Final answer
    x = 119,835.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.