Home / 129,313.73-178,418.07-75,611.94

Finding the Fourth Proportional to 129,313.73, 178,418.07 and 75,611.94

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Solution

The fourth proportional to 129,313.73, 178,418.07 and 75,611.94 is: 104,324.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,313.73 : 178,418.07 = 75,611.94 : x
  2. Step 2: Convert to fraction form
    129,313.73/178,418.07 = 75,611.94/x
  3. Step 3: Cross multiply
    129,313.73x = 178,418.07 × 75,611.94
  4. Step 4: Simplify right side
    129,313.73x = 13,490,536,403.76
  5. Step 5: Solve for x
    x = 13,490,536,403.76/129,313.73
  6. Step 6: Final answer
    x = 104,324.09

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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.