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Finding the Fourth Proportional to 139,020.83, 191,843.60 and 75,357.26

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Solution

The fourth proportional to 139,020.83, 191,843.60 and 75,357.26 is: 103,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,020.83 : 191,843.60 = 75,357.26 : x
  2. Step 2: Convert to fraction form
    139,020.83/191,843.60 = 75,357.26/x
  3. Step 3: Cross multiply
    139,020.83x = 191,843.60 × 75,357.26
  4. Step 4: Simplify right side
    139,020.83x = 14,456,808,044.54
  5. Step 5: Solve for x
    x = 14,456,808,044.54/139,020.83
  6. Step 6: Final answer
    x = 103,990.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.