Home / 131,450.92-181,189.75-102,720.66

Finding the Fourth Proportional to 131,450.92, 181,189.75 and 102,720.66

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Solution

The fourth proportional to 131,450.92, 181,189.75 and 102,720.66 is: 141,588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,450.92 : 181,189.75 = 102,720.66 : x
  2. Step 2: Convert to fraction form
    131,450.92/181,189.75 = 102,720.66/x
  3. Step 3: Cross multiply
    131,450.92x = 181,189.75 × 102,720.66
  4. Step 4: Simplify right side
    131,450.92x = 18,611,930,705.24
  5. Step 5: Solve for x
    x = 18,611,930,705.24/131,450.92
  6. Step 6: Final answer
    x = 141,588.44

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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.