Home / 128,916.66-193,371.94-75,944.59

Finding the Fourth Proportional to 128,916.66, 193,371.94 and 75,944.59

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Solution

The fourth proportional to 128,916.66, 193,371.94 and 75,944.59 is: 113,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,916.66 : 193,371.94 = 75,944.59 : x
  2. Step 2: Convert to fraction form
    128,916.66/193,371.94 = 75,944.59/x
  3. Step 3: Cross multiply
    128,916.66x = 193,371.94 × 75,944.59
  4. Step 4: Simplify right side
    128,916.66x = 14,685,552,700.80
  5. Step 5: Solve for x
    x = 14,685,552,700.80/128,916.66
  6. Step 6: Final answer
    x = 113,915.09

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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.