Home / 136,553.50-188,441.94-76,129.12

Finding the Fourth Proportional to 136,553.50, 188,441.94 and 76,129.12

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Solution

The fourth proportional to 136,553.50, 188,441.94 and 76,129.12 is: 105,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,553.50 : 188,441.94 = 76,129.12 : x
  2. Step 2: Convert to fraction form
    136,553.50/188,441.94 = 76,129.12/x
  3. Step 3: Cross multiply
    136,553.50x = 188,441.94 × 76,129.12
  4. Step 4: Simplify right side
    136,553.50x = 14,345,919,063.29
  5. Step 5: Solve for x
    x = 14,345,919,063.29/136,553.50
  6. Step 6: Final answer
    x = 105,057.13

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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.