Home / 107,005.38-160,398.70-69,640.48

Finding the Fourth Proportional to 107,005.38, 160,398.70 and 69,640.48

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Solution

The fourth proportional to 107,005.38, 160,398.70 and 69,640.48 is: 104,389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,005.38 : 160,398.70 = 69,640.48 : x
  2. Step 2: Convert to fraction form
    107,005.38/160,398.70 = 69,640.48/x
  3. Step 3: Cross multiply
    107,005.38x = 160,398.70 × 69,640.48
  4. Step 4: Simplify right side
    107,005.38x = 11,170,242,459.38
  5. Step 5: Solve for x
    x = 11,170,242,459.38/107,005.38
  6. Step 6: Final answer
    x = 104,389.54

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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.