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Finding the Fourth Proportional to 135,357.50, 202,922.04 and 85,327.32

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Solution

The fourth proportional to 135,357.50, 202,922.04 and 85,327.32 is: 127,918.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,357.50 : 202,922.04 = 85,327.32 : x
  2. Step 2: Convert to fraction form
    135,357.50/202,922.04 = 85,327.32/x
  3. Step 3: Cross multiply
    135,357.50x = 202,922.04 × 85,327.32
  4. Step 4: Simplify right side
    135,357.50x = 17,314,793,842.13
  5. Step 5: Solve for x
    x = 17,314,793,842.13/135,357.50
  6. Step 6: Final answer
    x = 127,918.98

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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.