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Finding the Fourth Proportional to 107,611.70, 161,315.15 and 83,906.10

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Solution

The fourth proportional to 107,611.70, 161,315.15 and 83,906.10 is: 125,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,611.70 : 161,315.15 = 83,906.10 : x
  2. Step 2: Convert to fraction form
    107,611.70/161,315.15 = 83,906.10/x
  3. Step 3: Cross multiply
    107,611.70x = 161,315.15 × 83,906.10
  4. Step 4: Simplify right side
    107,611.70x = 13,535,325,107.42
  5. Step 5: Solve for x
    x = 13,535,325,107.42/107,611.70
  6. Step 6: Final answer
    x = 125,779.31

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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.