Home / 129,857.36-179,297.16-85,274.96

Finding the Fourth Proportional to 129,857.36, 179,297.16 and 85,274.96

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Solution

The fourth proportional to 129,857.36, 179,297.16 and 85,274.96 is: 117,741.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,857.36 : 179,297.16 = 85,274.96 : x
  2. Step 2: Convert to fraction form
    129,857.36/179,297.16 = 85,274.96/x
  3. Step 3: Cross multiply
    129,857.36x = 179,297.16 × 85,274.96
  4. Step 4: Simplify right side
    129,857.36x = 15,289,558,147.11
  5. Step 5: Solve for x
    x = 15,289,558,147.11/129,857.36
  6. Step 6: Final answer
    x = 117,741.17

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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.