Home / 139,427.68-192,406.32-75,763.36

Finding the Fourth Proportional to 139,427.68, 192,406.32 and 75,763.36

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Solution

The fourth proportional to 139,427.68, 192,406.32 and 75,763.36 is: 104,551.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,427.68 : 192,406.32 = 75,763.36 : x
  2. Step 2: Convert to fraction form
    139,427.68/192,406.32 = 75,763.36/x
  3. Step 3: Cross multiply
    139,427.68x = 192,406.32 × 75,763.36
  4. Step 4: Simplify right side
    139,427.68x = 14,577,349,288.44
  5. Step 5: Solve for x
    x = 14,577,349,288.44/139,427.68
  6. Step 6: Final answer
    x = 104,551.33

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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.