Home / 203,128.40-304,720.92-84,772.64

Finding the Fourth Proportional to 203,128.40, 304,720.92 and 84,772.64

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Solution

The fourth proportional to 203,128.40, 304,720.92 and 84,772.64 is: 127,170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,128.40 : 304,720.92 = 84,772.64 : x
  2. Step 2: Convert to fraction form
    203,128.40/304,720.92 = 84,772.64/x
  3. Step 3: Cross multiply
    203,128.40x = 304,720.92 × 84,772.64
  4. Step 4: Simplify right side
    203,128.40x = 25,831,996,851.63
  5. Step 5: Solve for x
    x = 25,831,996,851.63/203,128.40
  6. Step 6: Final answer
    x = 127,170.78

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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.