Home / 128,910.69-193,371.27-61,408.02

Finding the Fourth Proportional to 128,910.69, 193,371.27 and 61,408.02

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Solution

The fourth proportional to 128,910.69, 193,371.27 and 61,408.02 is: 92,114.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,910.69 : 193,371.27 = 61,408.02 : x
  2. Step 2: Convert to fraction form
    128,910.69/193,371.27 = 61,408.02/x
  3. Step 3: Cross multiply
    128,910.69x = 193,371.27 × 61,408.02
  4. Step 4: Simplify right side
    128,910.69x = 11,874,547,310.45
  5. Step 5: Solve for x
    x = 11,874,547,310.45/128,910.69
  6. Step 6: Final answer
    x = 92,114.53

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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.