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Finding the Fourth Proportional to 107,445.70, 161,168.55 and 82,611.10

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Solution

The fourth proportional to 107,445.70, 161,168.55 and 82,611.10 is: 123,916.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,445.70 : 161,168.55 = 82,611.10 : x
  2. Step 2: Convert to fraction form
    107,445.70/161,168.55 = 82,611.10/x
  3. Step 3: Cross multiply
    107,445.70x = 161,168.55 × 82,611.10
  4. Step 4: Simplify right side
    107,445.70x = 13,314,311,200.91
  5. Step 5: Solve for x
    x = 13,314,311,200.91/107,445.70
  6. Step 6: Final answer
    x = 123,916.65

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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.