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Finding the Fourth Proportional to 107,297.76, 161,911.56 and 103,591.20

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Solution

The fourth proportional to 107,297.76, 161,911.56 and 103,591.20 is: 156,318.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,297.76 : 161,911.56 = 103,591.20 : x
  2. Step 2: Convert to fraction form
    107,297.76/161,911.56 = 103,591.20/x
  3. Step 3: Cross multiply
    107,297.76x = 161,911.56 × 103,591.20
  4. Step 4: Simplify right side
    107,297.76x = 16,772,612,794.27
  5. Step 5: Solve for x
    x = 16,772,612,794.27/107,297.76
  6. Step 6: Final answer
    x = 156,318.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.