Home / 129,781.96-179,082.84-76,054.66

Finding the Fourth Proportional to 129,781.96, 179,082.84 and 76,054.66

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Solution

The fourth proportional to 129,781.96, 179,082.84 and 76,054.66 is: 104,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,781.96 : 179,082.84 = 76,054.66 : x
  2. Step 2: Convert to fraction form
    129,781.96/179,082.84 = 76,054.66/x
  3. Step 3: Cross multiply
    129,781.96x = 179,082.84 × 76,054.66
  4. Step 4: Simplify right side
    129,781.96x = 13,620,084,508.03
  5. Step 5: Solve for x
    x = 13,620,084,508.03/129,781.96
  6. Step 6: Final answer
    x = 104,945.90

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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.