Home / 129,485.36-194,406.93-89,410.30

Finding the Fourth Proportional to 129,485.36, 194,406.93 and 89,410.30

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Solution

The fourth proportional to 129,485.36, 194,406.93 and 89,410.30 is: 134,238.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,485.36 : 194,406.93 = 89,410.30 : x
  2. Step 2: Convert to fraction form
    129,485.36/194,406.93 = 89,410.30/x
  3. Step 3: Cross multiply
    129,485.36x = 194,406.93 × 89,410.30
  4. Step 4: Simplify right side
    129,485.36x = 17,381,981,447.36
  5. Step 5: Solve for x
    x = 17,381,981,447.36/129,485.36
  6. Step 6: Final answer
    x = 134,238.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.