Home / 149,530.16-206,383.64-85,903.04

Finding the Fourth Proportional to 149,530.16, 206,383.64 and 85,903.04

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Solution

The fourth proportional to 149,530.16, 206,383.64 and 85,903.04 is: 118,564.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,530.16 : 206,383.64 = 85,903.04 : x
  2. Step 2: Convert to fraction form
    149,530.16/206,383.64 = 85,903.04/x
  3. Step 3: Cross multiply
    149,530.16x = 206,383.64 × 85,903.04
  4. Step 4: Simplify right side
    149,530.16x = 17,728,980,620.83
  5. Step 5: Solve for x
    x = 17,728,980,620.83/149,530.16
  6. Step 6: Final answer
    x = 118,564.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.