Home / 113,638.38-170,513.88-83,578.47

Finding the Fourth Proportional to 113,638.38, 170,513.88 and 83,578.47

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Solution

The fourth proportional to 113,638.38, 170,513.88 and 83,578.47 is: 125,409.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,638.38 : 170,513.88 = 83,578.47 : x
  2. Step 2: Convert to fraction form
    113,638.38/170,513.88 = 83,578.47/x
  3. Step 3: Cross multiply
    113,638.38x = 170,513.88 × 83,578.47
  4. Step 4: Simplify right side
    113,638.38x = 14,251,289,204.16
  5. Step 5: Solve for x
    x = 14,251,289,204.16/113,638.38
  6. Step 6: Final answer
    x = 125,409.12

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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.