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Finding the Fourth Proportional to 131,808.93, 181,896.50 and 71,379.67

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Solution

The fourth proportional to 131,808.93, 181,896.50 and 71,379.67 is: 98,504.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,808.93 : 181,896.50 = 71,379.67 : x
  2. Step 2: Convert to fraction form
    131,808.93/181,896.50 = 71,379.67/x
  3. Step 3: Cross multiply
    131,808.93x = 181,896.50 × 71,379.67
  4. Step 4: Simplify right side
    131,808.93x = 12,983,712,282.30
  5. Step 5: Solve for x
    x = 12,983,712,282.30/131,808.93
  6. Step 6: Final answer
    x = 98,504.04

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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.