Home / 135,429.96-203,179.50-85,862.28

Finding the Fourth Proportional to 135,429.96, 203,179.50 and 85,862.28

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Solution

The fourth proportional to 135,429.96, 203,179.50 and 85,862.28 is: 128,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,429.96 : 203,179.50 = 85,862.28 : x
  2. Step 2: Convert to fraction form
    135,429.96/203,179.50 = 85,862.28/x
  3. Step 3: Cross multiply
    135,429.96x = 203,179.50 × 85,862.28
  4. Step 4: Simplify right side
    135,429.96x = 17,445,455,119.26
  5. Step 5: Solve for x
    x = 17,445,455,119.26/135,429.96
  6. Step 6: Final answer
    x = 128,815.33

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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.