Home / 116,912.08-161,231.07-76,611.21

Finding the Fourth Proportional to 116,912.08, 161,231.07 and 76,611.21

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Solution

The fourth proportional to 116,912.08, 161,231.07 and 76,611.21 is: 105,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,912.08 : 161,231.07 = 76,611.21 : x
  2. Step 2: Convert to fraction form
    116,912.08/161,231.07 = 76,611.21/x
  3. Step 3: Cross multiply
    116,912.08x = 161,231.07 × 76,611.21
  4. Step 4: Simplify right side
    116,912.08x = 12,352,107,362.29
  5. Step 5: Solve for x
    x = 12,352,107,362.29/116,912.08
  6. Step 6: Final answer
    x = 105,652.96

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1.5x scale

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.