Home / 138,015.90-207,023.60-43,253.36

Finding the Fourth Proportional to 138,015.90, 207,023.60 and 43,253.36

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Solution

The fourth proportional to 138,015.90, 207,023.60 and 43,253.36 is: 64,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,015.90 : 207,023.60 = 43,253.36 : x
  2. Step 2: Convert to fraction form
    138,015.90/207,023.60 = 43,253.36/x
  3. Step 3: Cross multiply
    138,015.90x = 207,023.60 × 43,253.36
  4. Step 4: Simplify right side
    138,015.90x = 8,954,465,047.91
  5. Step 5: Solve for x
    x = 8,954,465,047.91/138,015.90
  6. Step 6: Final answer
    x = 64,879.95

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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.