Home / 100,739.92-139,025.79-58,290.24

Finding the Fourth Proportional to 100,739.92, 139,025.79 and 58,290.24

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Solution

The fourth proportional to 100,739.92, 139,025.79 and 58,290.24 is: 80,443.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,739.92 : 139,025.79 = 58,290.24 : x
  2. Step 2: Convert to fraction form
    100,739.92/139,025.79 = 58,290.24/x
  3. Step 3: Cross multiply
    100,739.92x = 139,025.79 × 58,290.24
  4. Step 4: Simplify right side
    100,739.92x = 8,103,846,665.29
  5. Step 5: Solve for x
    x = 8,103,846,665.29/100,739.92
  6. Step 6: Final answer
    x = 80,443.25

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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.