Home / 135,518.11-203,141.81-90,577.31

Finding the Fourth Proportional to 135,518.11, 203,141.81 and 90,577.31

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Solution

The fourth proportional to 135,518.11, 203,141.81 and 90,577.31 is: 135,775.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,518.11 : 203,141.81 = 90,577.31 : x
  2. Step 2: Convert to fraction form
    135,518.11/203,141.81 = 90,577.31/x
  3. Step 3: Cross multiply
    135,518.11x = 203,141.81 × 90,577.31
  4. Step 4: Simplify right side
    135,518.11x = 18,400,037,909.07
  5. Step 5: Solve for x
    x = 18,400,037,909.07/135,518.11
  6. Step 6: Final answer
    x = 135,775.49

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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.