Home / 138,435.45-207,701.36-43,680.26

Finding the Fourth Proportional to 138,435.45, 207,701.36 and 43,680.26

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Solution

The fourth proportional to 138,435.45, 207,701.36 and 43,680.26 is: 65,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,435.45 : 207,701.36 = 43,680.26 : x
  2. Step 2: Convert to fraction form
    138,435.45/207,701.36 = 43,680.26/x
  3. Step 3: Cross multiply
    138,435.45x = 207,701.36 × 43,680.26
  4. Step 4: Simplify right side
    138,435.45x = 9,072,448,150.25
  5. Step 5: Solve for x
    x = 9,072,448,150.25/138,435.45
  6. Step 6: Final answer
    x = 65,535.58

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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.