Home / 107,628.15-161,109.91-70,107.42

Finding the Fourth Proportional to 107,628.15, 161,109.91 and 70,107.42

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Solution

The fourth proportional to 107,628.15, 161,109.91 and 70,107.42 is: 104,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,628.15 : 161,109.91 = 70,107.42 : x
  2. Step 2: Convert to fraction form
    107,628.15/161,109.91 = 70,107.42/x
  3. Step 3: Cross multiply
    107,628.15x = 161,109.91 × 70,107.42
  4. Step 4: Simplify right side
    107,628.15x = 11,295,000,126.53
  5. Step 5: Solve for x
    x = 11,295,000,126.53/107,628.15
  6. Step 6: Final answer
    x = 104,944.66

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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.