Home / 138,445.20-207,667.80-114,825.60

Finding the Fourth Proportional to 138,445.20, 207,667.80 and 114,825.60

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Solution

The fourth proportional to 138,445.20, 207,667.80 and 114,825.60 is: 172,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,445.20 : 207,667.80 = 114,825.60 : x
  2. Step 2: Convert to fraction form
    138,445.20/207,667.80 = 114,825.60/x
  3. Step 3: Cross multiply
    138,445.20x = 207,667.80 × 114,825.60
  4. Step 4: Simplify right side
    138,445.20x = 23,845,579,735.68
  5. Step 5: Solve for x
    x = 23,845,579,735.68/138,445.20
  6. Step 6: Final answer
    x = 172,238.40

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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.