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Finding the Fourth Proportional to 107,951.15, 161,926.73 and 81,707.15

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Solution

The fourth proportional to 107,951.15, 161,926.73 and 81,707.15 is: 122,560.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,951.15 : 161,926.73 = 81,707.15 : x
  2. Step 2: Convert to fraction form
    107,951.15/161,926.73 = 81,707.15/x
  3. Step 3: Cross multiply
    107,951.15x = 161,926.73 × 81,707.15
  4. Step 4: Simplify right side
    107,951.15x = 13,230,571,208.58
  5. Step 5: Solve for x
    x = 13,230,571,208.58/107,951.15
  6. Step 6: Final answer
    x = 122,560.73

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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.