Home / 136,501.96-188,379.12-79,931.56

Finding the Fourth Proportional to 136,501.96, 188,379.12 and 79,931.56

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Solution

The fourth proportional to 136,501.96, 188,379.12 and 79,931.56 is: 110,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,501.96 : 188,379.12 = 79,931.56 : x
  2. Step 2: Convert to fraction form
    136,501.96/188,379.12 = 79,931.56/x
  3. Step 3: Cross multiply
    136,501.96x = 188,379.12 × 79,931.56
  4. Step 4: Simplify right side
    136,501.96x = 15,057,436,933.03
  5. Step 5: Solve for x
    x = 15,057,436,933.03/136,501.96
  6. Step 6: Final answer
    x = 110,309.31

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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.