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Finding the Fourth Proportional to 138,520.36, 207,780.58 and 33,339.33

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Solution

The fourth proportional to 138,520.36, 207,780.58 and 33,339.33 is: 50,009.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,520.36 : 207,780.58 = 33,339.33 : x
  2. Step 2: Convert to fraction form
    138,520.36/207,780.58 = 33,339.33/x
  3. Step 3: Cross multiply
    138,520.36x = 207,780.58 × 33,339.33
  4. Step 4: Simplify right side
    138,520.36x = 6,927,265,365.89
  5. Step 5: Solve for x
    x = 6,927,265,365.89/138,520.36
  6. Step 6: Final answer
    x = 50,009.00

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1.5x scale

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.