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Finding the Fourth Proportional to 107,469.30, 161,009.55 and 91,917.30

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Solution

The fourth proportional to 107,469.30, 161,009.55 and 91,917.30 is: 137,709.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,469.30 : 161,009.55 = 91,917.30 : x
  2. Step 2: Convert to fraction form
    107,469.30/161,009.55 = 91,917.30/x
  3. Step 3: Cross multiply
    107,469.30x = 161,009.55 × 91,917.30
  4. Step 4: Simplify right side
    107,469.30x = 14,799,563,110.22
  5. Step 5: Solve for x
    x = 14,799,563,110.22/107,469.30
  6. Step 6: Final answer
    x = 137,709.68

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1.5x scale

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.